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MEMORANDUM OPINION

BERYL A. HOWELL, United States District Judge

The plaintiff Walter B. Freeman filed this action under the Administrative Procedures Act (“APA”), 5 U.S.C. § 706(2), against the United States Department of the Interior (“DOI”) and two of its components, the Interior Board of Land Appeals (“IBLA”) and the Bureau of Land Management (“BLM”), seeking to set aside two decisions of the IBLA relating to the plaintiffs mining rights, on the grounds that the decisions were arbitrary, capricious, and lacked substantial evidence. See Compl. at 19 (“Prayer for Relief’), ECF No. 1. Pending before the Court is the plaintiffs Motion for Partial Summary Judgment on his First Cause of Action, challenging the May 7, 2008 IBLA decision in United States v. Freeman, 174 IBLA 290 (2008) (“2008 IBLA Decision”), which upheld the jurisdiction of DOI’s Office of Hearings and Appeals (“OHA”) to determine the validity of unpatented mining claims at historical dates when the claims were allegedly subject to a government taking within the meaning of the Fifth Amendment of the Constitution. PL’s Mot. Partial Summ. J. & Mem. Supp. (“PL’s Mot.”) at 2-3, ECF No. 15. For the reasons explained below, the plaintiffs motion is denied and the 2008 IBLA Decision stands.

I. BACKGROUND

The Court first briefly reviews the statutory and regulatory framework for assessing the validity of mining claims under the General Mining Law of 1872 (“Mining Law”), 30 U.S.C. §§ 22-54 (2006), before turning to a summary of the two decades of administrative proceedings that have culminated in this lawsuit.

A. Statutory and Regulatory Framework

“To encourage mining in the western United States, Congress enacted the General Mining Act of 1872.” Orion Reserves Ltd. P’ship v. Salazar, 553 F.3d 697, 699 (D.C.Cir.2009); see also Watt v. W. Nuclear, 462 U.S. 36, 47-49, 103 S.Ct. 2218, 76 L.Ed.2d 400 (1983) (noting that “[w]ith respect to land deemed mineral in character, the mining laws provided incentives for the discovery and exploitation of minerals”). As an incentive to explore for valuable mineral deposits, the Mining Law permits citizens “to go onto unappropriated, unreserved public land,” United States v. Locke, 471 U.S. 84, 86, 105 S.Ct. 1785, 85 L.Ed.2d 64 (1985), and to “stake, or locate, claims to extract minerals without prior government permission and without paying royalties to the United States.” Orion Reserves, 553 F.3d at 699 (citing 30 U.S.C. § 26) (internal quotation marks omitted); see also Kunkes v. United States, 78 F.3d 1549, 1551 (Fed.Cir.1996); Cook v. United States, 85 Fed.Cl. 820, 823 (2009), aff'd, 368 Fed.Appx. 143 (Fed.Cir.2010); Freese v. United States, 639 F.2d 754, 757-58 (Ct.Cl. 1981). Those who locate “mining loea-tions” on public land are expressly granted “the exclusive right of possession and enjoyment” but only “so long as they comply with the laws of the United States, and with State, territorial, and local regulations....” 30U.S.C. §26.

1. Requirements for Valid Mining Claim

Before a Congressional moratorium was enacted in 1994, claimants could “apply for purchase of a deed, or ‘patent,’ conveying full legal title to the land on which their claims are located.” Orion Reserves, 553 F.3d at 699 (citing 30 U.S.C. § 29). To qualify for a patent, the applicant must establish that the mining claim is valid. United States v. Shumway, 199 F.3d 1093, 1101-02 (9th Cir.1999) (“[N]o right arose from an invalid claim”). The D.C. Circuit has pointed out, however, that “[e]ven without a patent, claimants can maintain their mining rights indefinitely so long as they comply with federal, state, and local requirements” for a valid claim. Orion Reserves, 553 F.3d at 699 (citing 30 U.S.C. §§ 26, 28). These possessory interests are “unpatented” claims and give the owner equitable title, as opposed to “patented” claims, in which a private owner has been bestowed full legal title. Kunkes v. United States, 32 Fed.Cl. 249, 252 (Fed. C1.1994), aff'd, 78 F.3d 1549 (Fed.Cir.1996) (noting that for an unpatented claim “legal title to the land remains in the United States, [but] the claimant enjoys a valid, equitable title in the claim, possessing all of the incidents of real property”); Ford v. United States, 101 Fed.Cl. 234, 238 n. 6 (Fed.Cl.2011) (“An unpatented mining claim is an interest in only the minerals in the land and not in the land’s surface; the government retains fee title to the land.”).

An unpatented mining claim is valid against the United States only when both a discovery of valuable mineral deposit within the limits of the claim has been made, and the claimant has complied with all statutory and regulatory requirements relating to the location, recordation, and filing of claims. See 30 U.S.C. §§ 22, 26, 28, 28e. See also Best v. Humboldt Placer Mining Co., 371 U.S. 334, 336, 83 S.Ct. 379, 9 L.Ed.2d 350 (1963) (unpatented mining claims are “valid against the United States if there has been a discovery of mineral within the limits of the claim, if the lands are still mineral, and if other statutory requirements have been met”). As the Supreme Court explained almost a century ago, “no right arises from an invalid claim of any kind ... otherwise they work an unlawful private appropriation in derogation of the rights of the public.” Cameron v. United States, 252 U.S. 450, 460, 40 S.Ct. 410, 64 L.Ed. 659 (1920).

Thus, although a claimant may explore for mineral deposits before perfecting a mining claim, without a discovery, the claimant has no right to the property against the United States or an intervenor. 30 U.S.C. § 23 (mining claim perfected when there is a “discovery of the vein or lode”); see also Cole v. Ralph, 252 U.S. 286, 295-96, 40 S.Ct. 321, 64 L.Ed. 567 (1920); Waskey v. Hammer, 223 U.S. 85, 90, 32 S.Ct. 187, 56 L.Ed. 359 (1912) (noting that discovery is “a prerequisite to the location of the claim”); Am. Colloid Co. v. Babbitt, 145 F.3d 1152, 1156 (10th Cir. 1998) (“Before one may obtain any rights in a mining claim, one must ‘locate’ a valuable deposit of a mineral.”); Mineral Policy Ctr. v. Norton, 292 F.Supp.2d 30, 48 (D.D.C.2003) (“ ‘A mining claim does not create any rights against the United States and is not valid unless and until all requirements of the mining laws have been satisfied.’ ” (quoting Skaw v. United States, 13 Cl.Ct. 7, 28 (1987))).

To satisfy the discovery requirement for a valid claim, the mere physical presence of a mineral is insufficient. Instead, “the discovered deposits must be of such a character that ‘a person of ordinary prudence would be justified in the further expenditure of his labor and means, with a reasonable prospect of success, in developing a valuable mine.” United States v. Coleman, 390 U.S. 599, 602, 88 S.Ct. 1327, 20 L.Ed.2d 170 (1968) (internal quotations omitted); see also Cameron, 252 U.S. at 459, 40 S.Ct. 410 (“[T]o support a mining location the discovery should be such as would justify a person of ordinary prudence in the further expenditure of his time and means in an effort to develop a paying mine. That is not a novel or mistaken test, but is one which the Land Department long has applied and this court has approved.”); Davis v. Nelson, 329 F.2d 840, 846 (9th Cir.1964) (“[V]alidity of [ ] title ... depends upon the resolution of a question of fact, that is, has there been a discovery of valuable mineral within the limits of the claim?”); Foster v. Sea-ton, 271 F.2d 836, 838 (D.C.Cir.1959). “The obvious intent was to reward and encourage the discovery of minerals that are valuable in an economic sense.” Coleman, 390 U.S. at 602, 88 S.Ct. 1327. If the discovered deposits fail the “prudent person” test, the Government has the right to clear the title and the right to the possession of its land from a “useless and annoying encumbrance.” Davis, 329 F.2d at 846 (quoting Mulkem v. Hammitt, 326 F.2d 896, 897 (9th Cir.1964)). On the other hand, if the discovered deposits are valuable under the “prudent person” test, the unpatented mining claim “is a property right in the full sense, unaffected by the fact that the paramount title to the land is in the United States.” Union Oil Co. of Cal. v. Smith, 249 U.S. 337, 349, 39 S.Ct. 308, 63 L.Ed. 635 (1919). This constitutes a property interest, “which is within the protection of the Fifth Amendment’s prohibition against the taking of private property for public use without just compensation.” Skaw v. United States, 740 F.2d 932, 936 (Fed.Cir.1984).

2. Administrative Review of Contested Claims

BLM is a subagency within DOI tasked with administering mining claims on federal public land. See generally 43 C.F.R. § 3809; Nat’l Wildlife Fed’n v. Burford, 835 F.2d 305, 307-08 (D.C.Cir.1987) (BLM is “the subagency of the Department charged with land management responsibilities, with permanent, comprehensive guidelines for carrying out its mandate”). To determine whether a claim is valid, BLM conducts a mineral examination. If the examination indicates the lack of discovery of a valuable mineral deposit or that the applicant failed to meet other administrative requirements under the Mining Law, the BLM may initiate an administrative mining contest proceeding to challenge the validity of the claim, since either of those examination results, if substantiated, may render the mining claimant ineligible for a patent.

Prior to validity proceedings, un-patented claims amount to a potential property interest, since it is the discovery of a valuable mineral deposit and satisfaction of statutory and regulatory requirements that bestows possessory rights. See Ickes v. Underwood, 141 F.2d 546, 548-49 (D.C.Cir.1944) (until there has been a determination that there has been a valuable discovery, claimants had only a gratuity from the United States); Payne v. United States, 31 Fed.Cl. 709, 711 (1994) (rejecting plaintiffs argument that in the absence of a challenge to validity, the court must take at face value their assertion that claims' are supported by an adequate mineral discovery). To have a compensable interest in an unpatented mining claim sufficient to bring a taking action, the validity of the mining claim must be established. See Ford, 101 Fed.Cl. at 238 (finding without BLM determination, plaintiff could not establish a valid property interest in his unpatented mining claim).

The BLM has broad authority to initiate contest challenges, and may do so “for any cause affecting the legality or validity of any entry or settlement or mining claim.” 43 C.F.R. § 4.451-1. The meaning and scope of this regulation is the gravamen of the dispute at issue in the pending motion. Mining contest challenges are brought before the OHA, which “is an authorized representative of the Secretary for the purpose of hearing, considering, and deciding matters within the jurisdiction of the Department involving hearings, appeals, and other review functions of the Secretary.” 43 C.F.R. § 4.1. The OHA provides two levels of review to resolve mining contests: Administrative Law Judges (“ALJs”) in the Hearing Division have authority to hold evidentiary hearings and issue decisions concerning the validity of mining claims; and the IBLA decides appeals from ALJ rulings. 43 C.F.R. §§ 4.452-4-8; 43 C.F.R. § 4.452-9.

In contest proceedings before an OHA ALJ, the BLM bears the initial “burden of going forward with sufficient evidence to establish a prima facie case” that the claim is invalid. Foster, 271 F.2d at 838. “The government presents a pri-ma facie case where a governmental mineral examiner offers expert testimony, based on probative evidence, that the discovery of a valuable mineral deposit has not been made within the boundaries of a contested claim.” Ernest K Lehmann & Assocs. of Montana, Inc. v. Salazar, 602 F.Supp.2d 146, 150 (D.D.C.2009), aff'd, 377 Fed.Appx. 28 (D.C.Cir.2010) (citing United States v. Pass Minerals, Inc., 168 IBLA 115, 123 (IBLA 2006)). Once the government has made a prima facie ease, the burden shifts to the claimant to establish by a preponderance of the evidence sufficient proof of validity. Id. The claimant bears the ultimate burden of persuasion and must produce evidence to rebut the government’s case and establish the validity of the mining claim. Lara v. Sec’y of Interior, 820 F.2d 1535, 1542 (9th Cir.1987); see also Ernest K. Lehmann & Assocs., Inc., 602 F.Supp.2d at 150 (citing United States v. Rannells, 175 IBLA 363, 380 (IBLA 2008))); Reoforce, Inc. v. United States, 119 Fed.Cl. 1, 7-8, 2013 WL 1405925, at *5, 2013 U.S. Claims LEXIS 250, at *17 (2013); United States v. Everett Foster, 65 Interior Dec. 1, 11 (1958) (“Although the Government initiated the charges and had the initial burden of sustaining at least the first charge — that there had been no discovery — if it were to prevail in the contests, once the Government had produced evidence to show that no discovery had been made, it was up to the contestees to overcome that evidence”).

Either party may appeal the ALJ determination to the IBLA, see 43 C.F.R. § 4.410(a), which serves as DOI’s “review authority charged with deciding, on behalf of the Secretary, matters relating to the use and disposition of public lands and their resources.” Aera Energy LLC v. Salazar, 642 F.3d 212, 216 (D.C.Cir.2011) (internal quotations and citations omitted). Decisions of the IBLA constitute final agency action, 43 C.F.R. § 4.403, and, therefore, no further administrative appeal is authorized within DOI, 43 C.F.R. § 4.21(d). See also Hoyl v. Babbitt, 129 F.3d 1377, 1382 (10th Cir.1997) (“The IBLA’s decision represents the final agency action .... ”); Doria Mining & Eng’g Corp. v. Morton, 608 F.2d 1255, 1257 (9th Cir.1979) (“A decision of the IBLA is not subject to further appeal before either the Director or any Appeals Board ... [and] constitute^] the Secretary of the Interior’s final decision”)

B. Factual and Procedural Background

The instant dispute stems from the plaintiffs original 161 unpatented mining claims, located by his predecessors-in-interest between 1940 and the early 1970s, on approximately 4,968 acres of Federal land administered by BLM and the United States Forest Service (“USFS”), mostly located in the Siskiyou National Forest in Southern Oregon. Freeman, 174 IBLA at 291; AR at 1183. Litigation over the validity of the plaintiffs claims has been ongoing for over two decades before the United States Court of Federal Claims (“CFC”), in DOI administrative proceedings, and, now, before this Court.

1. Effect of Moratorium on Plaintiff’s Patent Application

On September 9, 1992, the plaintiff filed an application seeking to patent 151 of the 161 mining claims. Freeman, 174 IBLA at 291-92; AR 1183-84. Before the application was acted on by BLM, the congressional moratorium took effect on October 1, 1994, halting the processing of patent applications for unpatented mining claims. See Department of the Interior and Related Agencies Appropriations Act of 1995 § 112. Due to this moratorium, “BLM has since refused to process [the plaintiffs] application.” Freeman, 174 IBLA at 292; AR 1184. On December 17, 1992, the plaintiff filed a “plan of operations” (“POO”) with the USFS, proposing to sample and mine his claims. Id. “After several delays by the USFS and intervening administrative appeals by [the plaintiff], the USFS denied his POO, rejecting his last appeal on October 11, 2000.” Id.

2. Proceedings Before the U.S. Court of Federal Claims

On January 22, 2001, the plaintiff filed suit in the CFC, alleging that the defendants had, “by refusing to approve his patent application and by effectively denying approval of his POO, engaged in a taking of his property rights,” in violation of the Fifth Amendment. Freeman, 174 IBLA at 292; AR 1184; see also AR 10699-712 (CFC Complaint). The plaintiffs claim before the CFC turns on whether he possessed a compensable property right against the United States. To facilitate making this determination, the CFC stayed proceedings in the ease and remanded the matter to the DOI “for determination of validity of plaintiffs mining claims.” AR 10728 (CFC Order at 1, Freeman v. United States, No. 01-39L (Oct. 10, 2001)).

Following the stay of CFC proceedings, the parties successfully reached agreement regarding both the dates when the plaintiff claimed the alleged taking occurred and the appropriateness of the use of those dates for a validity determination. The plaintiffs counsel emphasized that “we believe this process should try to determine the validity of [the plaintiffs] claims as of the date of the taking,” reiterating that “the critical date should be the date the claims were taken.” AR 10877, Ex. 101 at 5 (Letter, dated September 5, 2003, from Richard M. Stephens, plaintiffs counsel, to Otto Schumacher, Western Mine Engineering, Inc. & Terry Maley, BLM). Indeed, the plaintiffs counsel cautioned that “[w]e hope this case does not follow the path used in Skaw v. United States, 740 F.2d 932 (Fed.Cir.1984), where BLM determined that claims were not valid as of a date well after the alleged taking.” Id. at 6. As to the applicable dates, the plaintiff suggested two possible dates for the validity determination: “the first date is 1993 when the Forest Supervisor publicly stated in no uncertain terms that there was ‘no way in hell’ that the Forest Service would allow [the plaintiff] to mine his claims;” and “the second potential date of taking is the date the Forest Service’s formal process [on the plaintiffs POO] was completed ... in 2000.” Id.

In response to the plaintiffs proposal about using the years 1993 or 2000 as the dates when the alleged taking occurred, DOI sought more precise dates than entire years. AR 10887-89, Ex. 105 (Letter, dated November 12, 2003, from Bradley Gren-ham, Regional Solicitor DOI to Richard M. Stephens, plaintiffs counsel). At the outset, DOI rejected the plaintiffs suggestion that the date when a Forest Service employee allegedly made the “no way in hell” statement could constitute the date of a taking since, even if that statement were made, such an oral statement would not constitute a final agency action necessary for the validity determination. Id. at 10888. At the same time, DOI suggested the date of October 6, 2000, for the validity determination, since this was the date of the denial of the POO, which was cited in the plaintiffs complaint before the CFC as a taking. Id. at 10887-88. In addition, DOI proposed October 1, 1994, the effective date of the congressionally imposed moratorium on the processing of mineral patents, as another possible date to use for the validity determination. Id. at 10888. The agency requested that the plaintiff provide notice, in writing, by December 1, 2003, of any disagreement about the use of either October 6, 2000, or October 1, 1994, as the dates of the alleged taking for the validity determination. Id.

The plaintiffs response did not dispute the appropriateness of these two dates— October 1, 1994 and October 6, 2000 — as the alleged taking dates. Rather, the plaintiff agreed that “October 6, 2000 is one possible appropriate date.” AR 10892, Ex. 106 (Letter, dated November 19, 2003, from Richard M. Stephens, plaintiffs counsel, to Bradley Grenham, Regional Solicitor DOI). The plaintiff reiterated that 1998 was another possible date, but acknowledged that, since this date was close to the 1994 moratorium date offered by the agency, the plaintiff agreed that “October 4, 1994 is the appropriate date for the temporary taking of Mr. Freeman’s rights to a patent.” Id.

With this agreement on the alleged “taking” dates, the BLM reviewed the plaintiffs mining claims to determine whether the requisite discovery had occurred by either of those dates. After extensive examination, the mineral team assigned to determine the validity of the mining claims as of the two alleged “taking” dates, determined that there was a lack of discovery and recommended that the BLM issue a mining contest. AR 7751-52, Ex. 1 (DOI-BLM Mineral Report, dated January 31, 2005, stating “no discovery ... exists on any of the Claimant’s 161 mining claims ... It is recommended that the BLM initiate contest proceedings.... Minerals have not been found on any of the 161 mining claims ... in sufficient qualities or quantities to constitute a discovery. The minerals could not have been marketed at a profit as of either the 1994 or 2000 marketability dates.”).

3. 2007 OHA ALJ Ruling

An OHA ALJ conducted a 25-day contest claim hearing initiated by BLM, and received over 400 exhibits and over 3,400 transcript pages of testimony elicited by the parties. See Freeman, 174 IBLA at 293; AR 1186. At the conclusion of the hearing, the ALJ raised sua sponte the concern that he lacked “jurisdiction or authority to resolve the allegation of the [contest] Complaint 'that discovery of a valuable mineral deposit did not exist on any of the contested claims as of 1994 and 2000.” AR 1264 (OHA ALJ Order, dated August 10, 2007, on “Ruling on Jurisdictional Issue and Certification for Interlocutory Appeal; Claim Validity As of the Date of Hearing Is Not At Issue”) (“2007 ALJ Ruling”). Both parties expressed disagreement with the jurisdictional concern expressed by the ALJ and took the position that OHA “has jurisdiction to determine the validity of the claims as of the alleged takings dates in 1994 and 2000.” Id. at 1265. Nevertheless, contrary to the views of both parties, the ALJ ruled that the OHA lacked jurisdiction to review the validity of mining claims at the critical historical dates when the alleged takings occurred. Id. at 1262,1265.

The 2007 ALJ Ruling acknowledged the lack of “any controlling precedent directly addressing the jurisdictional issue,” as well as the lack of clear direction as to what constitutes the “critical date for determining validity when a patent application has been filed.” AR 1266. Due to this perceived dearth of controlling authority, the 2007 ALJ Ruling relied heavily on dicta in two other ALJ decisions, “which concluded that this office had no authority to determine whether contested mining claims were valid as of the date of alleged takings which were subject to a federal lawsuit.” Id. at 1265 (citing United States v. Aloisi, CACA 41272 (May 2, 2007) and United States v. Story, Idaho 15974 (Nov. 19, 1981)).

Three inter-related reasons are set out in the 2007 ALJ Ruling to reach this conclusion about the OHA ALJ’s lack of authority to decide the validity of mining claims as of the alleged takings dates. First, the ALJ construed the authority of the government to initiate claim contests under the DOI regulation codified at 43 C.F.R. 4.451-1, and found that although this regulation grants “broad” power to DOI to initiate a contest, it also limits the charge or contest that may be brought to “a cause affecting the legality or validity of a mining claim.” Id. at 1268. The ALJ listed such causes as including “the failure to discover a valuable mineral deposit within the claim, the failure to properly locate the claim, or the failure to pay any required annual maintenance fee.” Id. at 1274. By contrast, the ALJ characterized “the alleged taking of a mining claim” as a “motivating reason[] for filing a contest but ... not [a] cause[ ] affecting the legality or validity of a claim.” Id. In short, the ALJ determined that the regulation “has conditioned” the Secretary’s authority regarding mining claims to causes “affecting the legality or validity of a mining claim” and such causes “do not include an alleged taking of the mining claim.” Id.

Second, and relatedly, since a validating discovery of valuable minerals “may be made even after a contest proceeding has been initiated,” id. at 1268 (citing United States v. Foster, 65 Interior Dec. 1, 5-6 (1958), aff'd, Foster v. Seaton, 271 F.2d 836 (D.C.Cir.1959)), the ALJ determined that the “law does not appear to contemplate making a discovery determination as of the dates of alleged takings, unless such a date coincidentally coincides with the applicable critical date: the date of the hearing or, if Contestee complied with all the^patent requirements, the date of compliance,” id. at 1269. In the plaintiffs case, the 1994 and 2000 dates did not correspond with the hearing date, and because “it seems unlikely that [the plaintiff] complied” with the requisite patent requirements by the alleged taking dates, those takings dates failed to" correspond- with either critical date. Id. at 1270-71.

Finally, the ALJ concluded that the purpose of the Mining Law is “better served by restricting” validity determinations to the critical dates of the contest hearing or compliance with patent requirements, rather than “based upon facts existing as of the dates of the alleged takings or some other non-critical dates in the past.” Id. at 1270. Indeed, the ALJ called it “nonsensical to encourage and reward through a determination of validity the development and discovery of deposits not presently valuable,” or to find “a deposit which is presently valuable, and whose development should rewarded and encouraged by validating the encompassing mining claim, ... invalid for lack of discovery at some prior point in time.” Id. at 1271.

The ALJ found that “[t]he foregoing leads to the conclusion that [DOI] has no authority to initiate a contest, and this office has no jurisdiction to resolve a contest, based upon the charge that no discovery existed on each mining claim as of 1994 and 2000 rather than the applicable critical date.” Id. at 1274.

4. 2008 IBLA Decision Reversing ALJ’s 2007 Ruling

The BLM filed an interlocutory appeal to the IBLA challenging the 2007 ALJ ruling that the Secretary, and by extension OHA, did not have the necessary jurisdiction to determine the validity of unpatent-ed mining claims as of alleged takings dates prior to the contest hearing. On May 7, 2008, the IBLA reversed the ALJ’s ruling that it lacked jurisdiction, finding instead that “the Secretary, through BLM, has the authority to bring a contest to determine the validity of mining claims as of the dates of the alleged takings,” and that OHA ALJs have “jurisdiction and authority to adjudicate such a contest.” Freeman, 174 IBLA at 297; AR 1189. The IBLA observed that while “a claimant may make a discovery and validate a mining claim after any such date, even after contest proceedings have begun,” there “is nothing in the applicable statutes, Departmental regulations, or case law that restricts mining contests” in the manner interpreted by the ALJ. Freeman, 174 IBLA at 296; AR 1188. In fact, the IBLA noted that “[t]he Board has upheld numerous contest decisions in which the contestant’s complaint alleged invalidity only as of a date years prior to the date of the hearing.” Freeman, 174 IBLA at 296 n.9; AR 1188 (citing United States v. Clear Gravel Enters., Inc., 2 IBLA 287 (1971); United States v. Stewart, 1 IBLA 161 (1970); and United States v. Bartlett, 2 IBLA 275 (1971)).

The IBLA disagreed with the ALJ’s interpretation of the governing DOI regulations and concluded that a “claim that is not supported by a discovery as of the alleged takings dates would be invalid at that time under the mining laws, and the Government can surely bring a contest on that basis pursuant to 43 C.F.R. § 4.451-1.” Freeman, 174 IBLA at 296; AR 1188 (emphasis in original). The IBLA pointed out that the “Department’s authority to determine claim validity as of any point in time has long been recognized by the courts.”- Freeman, 174 IBLA 295; AR 1187 (citing Cameron, 252 U.S. at 460, 40 S.Ct. 410). Correspondingly, this authority “surely encompasses providing assistance to the United States in resolving a takings lawsuit that arises out of mineral entries on public lands.” Id.

5. Remand and 2010 IBLA Decision

The IBLA remanded the matter to the ALJ. During post-hearing briefing, the plaintiff conceded the invalidity of 50 claims, which the ALJ declared null and void. Subsequently, the ALJ concluded that discovery of valuable mineral deposits had not been made on the remaining 111 claims at the time of the alleged takings. See United States v. Freeman, 179 IBLA 341, 345 (2010) (“2010 IBLA Decision”); AR 5809. The IBLA affirmed this decision in 2010. Id. at 389-90.

6. The Plaintiff’s Instant Complaint

On June 27, 2012, the plaintiff filed the instant complaint, challenging the 2008 and 2010 IBLA Decisions in two causes of action. See Compl. at 1. The first cause of action alleges that IB LA’s 2008 holding “that mining claims can be determined to be presently invalid based on historic economic conditions is arbitrary, capricious, [ ][an] abuse of discretion, [ ] not in accordance with the law,” id. ¶ 32, and “in excess of its statutory jurisdiction,” id. ¶ 33. The plaintiff alleges that the IBLA “confuse[d] the initiation of contest proceedings with the establishment of intervening rights,” id. ¶ 36, failed to observe procedural rules, id. ¶ 38, failed to support its decision by substantial evidence, id. ¶ 39, and that the DOI “is collaterally estopped from taking [a] position contrary to the rulings” in other OHA cases, id. ¶ 40.

The second cause of action alleges that the “IBLA’s 2010 decision[,] declaring Plaintiffs mining claims invalid for lack of discovery of a valuable mineral deposit,” id. ¶43, is “arbitrary and capricious,” id. ¶ 44, contrary to the plaintiffs constitutional rights, id. ¶ 45, in excess of statutory authority, id. ¶ 46, “issued without observance” of procedural requirements under the APA, id. ¶47, and unsupported by substantial evidence, id. ¶ 48. The plaintiffs pending partial motion for summary judgment addresses only the first cause of action.

II. LEGAL STANDARD

A. Summary Judgment

Granting a motion for summary judgment is appropriate if the movant carries the burden of showing “that there is no genuine dispute as to any material fact and the movant is entitled to judgment as a matter of law,” based upon the pleadings, depositions, and affidavits, and other factual materials in the record. Fed. R. Civ. P. 56(a), (c); Ali v. Tolbert, 636 F.3d 622, 628 (D.C.Cir.2011); Tao v. Freeh, 27 F.3d 635, 638 (D.C.Cir.1994). A genuine issue of material fact is one that could change the outcome of the litigation. Anderson v. Liberty Lobby, Inc., 477 U.S. 242, 247-48, 106 S.Ct. 2505, 91 L.Ed.2d 202 (1986). The Court is only required to consider the materials explicitly cited by the parties, but may, on its own accord, consider “other materials in the record.” Fed. R. Civ. P. 56(c)(3).

In this case, the Court is presented with a partial motion for summary-judgment for the purposes of reviewing the plaintiffs legal challenge to a final agency action in the form of an IBLA decision. “[W]hen an agency action is challenged[ ] ... [t]he entire case on review is a question of law, and only a question of law.” Marshall Cnty. Health Care Auth. v. Shalala, 988 F.2d 1221, 1226 (D.C.Cir.1993). This Court need not and ought not engage in lengthy fact finding, since “[generally speaking, district courts reviewing agency action under the APA’s arbitrary and capricious standard do not resolve factual issues, but operate instead as appellate courts resolving legal questions.” James Madison Ltd. by Hecht v. Ludwig, 82 F.3d 1085, 1096 (D.C.Cir.1996); see also Sierra Club v. Mainella, 459 F.Supp.2d 76, 90 (D.D.C.2006) (“Under the APA, it is the role of the agency to resolve factual issues to arrive at a decision that is supported by the administrative record, whereas the function of the district court is to determine whether or not as a matter of law the evidence in the administrative record permitted the agency to make the decision it did.”) (quotation marks and citation omitted); McDonough v. Mabus, 907 F.Supp.2d 33, 42 (D.D.C.2012); Wilson v. McHugh, 842 F.Supp.2d 310, 315 (D.D.C. 2012); Caez v. United States, 815 F.Supp.2d 184, 188 (D.D.C.2011). Neither party has raised a disputed material fact necessary to resolution of the legal issue posed in the pending partial motion for summary judgment.

B. Deference Under APA

When an administrative determination is challenged under the APA, “a reviewing court shall set aside any agency action, finding, or conclusion that is ‘arbitrary, capricious, an abuse of discretion, or otherwise not in accordance with law.’ ” Theodore Roosevelt Conservation P’ship v. Salazar, 616 F.3d 497, 507 (D.C.Cir.2010) (quoting 5 U.S.C. § 706(2)(A)). An agency action is arbitrary and capricious if the agency has “entirely failed to consider an important aspect of the problem, offered an explanation for its decision that runs counter to the evidence before the agency, or is so implausible that it could not be ascribed to a difference in view or the product of agency expertise.” Motor Vehicle Mfrs. Ass’n of U.S. v. State Farm Mut. Auto. Ins. Co., 463 U.S. 29, 42-43, 103 S.Ct. 2856, 77 L.Ed.2d 443 (1983). “The scope of review under the ‘arbitrary and capricious’ standard is narrow and a court is not to substitute its judgment for that of the agency.” Mount Royal Joint Venture v. Kempthorne, 477 F.3d 745, 753 (D.C.Cir.2007) (quoting Motor Vehicle Mfrs. Ass’n, 463 U.S. at 43, 103 S.Ct. 2856).

An agency’s interpretation of its own regulation commands substantial judicial deference. See Bowles v. Seminole Rock & Sand Co., 325 U.S. 410, 415-17, 65 S.Ct. 1215, 89 L.Ed. 1700 (1945); Auer v. Robbins, 519 U.S. 452, 463, 117 S.Ct. 905, 137 L.Ed.2d 79 (1997); Drake v. F.A.A., 291 F.3d 59, 68 (D.C.Cir.2002). “It is sometimes said that this deference is even greater than that granted an agency interpretation of a statute it is entrusted to administer.” Paralyzed Veterans of Am. v. D.C. Arena L.P., 117 F.3d 579, 584 (D.C.Cir.1997). “When an agency interprets its own regulation, the Court, as a general rule, defers to it ‘unless that interpretation is ‘plainly erroneous or inconsistent with the regulation.’ ” Decker v. Nw. Envtl. Def. Ctr., — U.S.-, 133 S.Ct. 1326, 185 L.Ed.2d 447 (2013) (quoting Chase Bank USA, N.A. v. McCoy, 562 U.S. 195, 131 S.Ct. 871, 178 L.Ed.2d 716 (2011)) (quoting Auer, 519 U.S. at 461, 117 S.Ct. 905); see also Christopher v. SmithKline Beecham Corp., — U.S. -, 132 S.Ct. 2156, 183 L.Ed.2d 153 (2012) (agency’s interpretation controls unless it is plainly erroneous or inconsistent with the regulation); Seminole Rock, 325 U.S. at 414, 65 S.Ct. 1215 (noting that a regulation “becomes ... controlling weight unless it is plainly erroneous or inconsistent with the regulation.”); Texas v. EPA, 726 F.3d 180, 195 (D.C.Cir.2013) (agency interpretation of its regulation is “controlling because the interpretation is neither plainly erroneous [n]or inconsistent with the regulation, and there is no reason to suspect that it does not reflect the agency’s fair and considered judgment on the matter in question”) (internal quotations and citations omitted; brackets in original). Thus, a plaintiff challenging an agency’s interpretation of its own regulations carries a “heavy burden in advancing [that] claim” because an “agency’s interpretation of its own regulations ‘must be given controlling weight unless it is plainly erroneous.’ ” In re Polar Bear Endangered Species Act Listing & Section Jf(d) Rule Litig. — MDL No. 1993, 709 F.3d 1, 11 (D.C.Cir.2013) (internal citations omitted); see Auer, 519 U.S. at 463, 117 S.Ct. 905; Thomas Jefferson Univ. v. Shalala, 512 U.S. 504, 512, 114 S.Ct. 2381, 129 L.Ed.2d 405 (1994) (“[W]e must defer to the [agencyj’s interpretation unless an ‘alternative reading is compelled by the regulation’s plain language or by other indications of the Secretary’s intent at the time of the regulation’s promulgation.”). “Although an agency is ‘entitled to significant deference ip interpreting its own regulation — perhaps even more than an agency gets in interpreting a statute under Chevron — it is unlikely we would defer to an unreasonable agency interpretation of an ambiguous regulation.” Menkes v. U.S. Dep’t of Homeland Sec., 637 F.3d 319, 343 (D.C.Cir.2011) (internal citations omitted). Indeed, an agency is not permitted to “to promulgate mush and then give it concrete form only through subsequent less formal ‘interpretations.’” Paralyzed Veterans of Am., 117 F.3d at 584-85.

The D.C. Circuit has provided explicit instructions on the scope of review under the arbitrary and capricious standard applicable to challenges, such as the instant one, to a decision of the IBLA regarding mining claims. See Aera Energy LLC, 642 F.3d at 218 (“[T]he IBLA’s decision ... represents Interior’s final agency action for the purposes of judicial review”). Specifically, in Orion Reserves, 553 F.3d at 703-04, the Court stated: “We uphold the IBLA’s determinations so long as the Board engaged in reasoned decisionmak-ing and its decision is adequately explained and supported by the record. Likewise, because substantial evidence means such relevant evidence as a reasonable mind might accept as adequate to support a conclusion, we reverse an agency’s decision only when the record is so compelling that no reasonable factfinder could fail to find to the contrary.” Id. (internal citations and quotation marks omitted).

III. DISCUSSION

The Supreme Court has long recognized that the Secretary of DOI is granted broad plenary authority under the Mining Law over the administration of public lands, including the determination of the validity of any mining claims. As the Supreme Court explained in Cameron, 252 U.S. at 459-60, 40 S.Ct. 410,

[b]y general statutory provisions the execution of the laws regulating the acquisition of rights in the public lands and the general care of these lands is confided to the Land Department, as a special tribunal; and the Secretary of the Interior, as the head of the department, is charged with seeing that this authority is rightly exercised to the end that valid claims may be recognized, invalid ones eliminated, and the rights of the public preserved.

Id. The Court further made clear that even when “the mineral land law does not in itself confer such authority ... in the absence of some direction to the contrary, the general statutory provisions before mentioned vest it in the land department.” Id. at 461, 40 S.Ct. 410. See also Best, 371 U.S. at 336-39, 83 S.Ct. 379 (noting that “the Department has been granted plenary authority over the administration of public lands, including mineral lands; and it has been given broad authority to issue regulations concerning them” and that “Congress has entrusted the Department of the Interior with the management of the public domain and prescribed the process by which claims against the public domain may be perfected”).

The plaintiff does not challenge the general jurisdiction of DOI to make claim validity determinations or the grant to the OHA, under 43 C.F.R. § 4.1, of “the full authority of the Secretary.” Pl.’s Mot. at 13. Rather, the plaintiff contends that OHA’s authority to exercise the power of the Secretary has been limited by regulation “to those matters within the jurisdiction of the Department involving hearings and appeals,” which jurisdiction is set out in regulation 43 C.F.R. § 4.451-1, governing the government’s initiation of contests. Id. According to the plaintiff, regulation 43 C.F.R. § 4.451-1 does not provide authority for the agency to make determinations regarding the legality or validity of mining claims as of discrete historical dates, but may only “determin[e] the legality or validity [of mining claims] in the present.” See Pl.’s Mot. at 13 (emphasis in original); id. (“A contest complaint which does not seek a determination of present legality or validity is not within the scope of this regulation.”); id. at 14 (“despite the broad authority of OHA, its jurisdiction is limited by the Department’s regulations regardless of whether the parties, including the Department, desire a decision”). The defendants disagree with this “pinched and constricted” reading of the disputed regulation, Defs’ Opp’n at 24, contending that the plain language of this regulation broadly authorizes the agency “to determine validity on any date relevant to the action prompting the validity determination,” id. at 33.

The plaintiff argues that this regulation does not authorize OHA “to determine the validity of Freeman’s claims as of historical dates based on historical circumstances no longer in existence,” PL’s Mot. at 2-3, and that the 2008 IBLA Decision to the contrary is arbitrary and capricious, for principally the following three reasons: (1) the plain meaning of the disputed regulation limits OHA’s jurisdiction “to determining the legality or validity in the present,” id. at 13; (2) the decision conflicts with DOI policies and the purpose of the Mining Law, id. at 23-27; and (3) the decision relies upon precedent not supportive of the conclusion and fails to follow precedent in a manner violative of collateral estoppel principles and the Equal Protection clause, id. at 27-35.

For the reasons discussed below, the Court finds that regulation 43 C.F.R. § 4.451-1 is unambiguous and, further, that the agency’s interpretation of its regulation reflected in the 2008 IBLA Decision is fully consistent with the plain language of the regulation and entitled to substantial deference. For the reasons set out below, the plaintiffs arguments that the 2008 IBLA Decision is arbitrary and capricious are unavailing.

A. 2008 IBLA Decision Reflects Unambiguous Meaning of Disputed Regulation

The DOI regulation at issue here, 43 C.F.R. § 4.451-1, provides, in pertinent part, that “The Government may initiate contests for any cause affecting the legality or validity of ... any mining claim.” 43 C.F.R. § 4.451-1. The parties dispute whether the phrase “affecting the legality or validity,” as used in the regulation, is sufficiently broad to provide authority for the OHA to evaluate mining claims based on historical dates. See Pl.’s Mot. at 13 (language of disputed regulation “does not refer to the ‘historical validity’ of the mining claim”); Defs.’ Mem. Opp’n Pl.’s Partial Mot. Summ. J. (Defs.’ Opp’n”) at 15, ECF No. 16 (“[T]here is nothing in the applicable statutes, Departmental Regulations, or case law that restricts mining contest” in this manner). Construction of this DOI regulation must begin with the words in the regulation and their plain meaning.

The regulation permits the government to contest a mining claim and the OHA to hear such contest, premised on “any cause.” Thus, the power of the government to bring, and OHA’s concomitant power to hear, a contest claim is broad. As the Supreme Court has recently noted, the word “any” “has an “ ‘expansive meaning,’ ” that “can broaden to the maximum, but never change in the least, the clear meaning of the phrase selected by Congress here.” Freeman v. Quicken Loans, Inc., — U.S. -, 132 S.Ct. 2034, 182 L.Ed.2d 955 (2012) (quoting Dep’t of Hous. and Urban Dev. v. Rucker, 535 U.S. 125, 131, 122 S.Ct. 1230, 152 L.Ed.2d 258 (2002). See also Defs.’ Opp’n at 16 (noting that “[a]ny cause, by definition, is any reason for the action, any motive, or any ground for legal action” and citing Merriam-Webster’s Collegiate Dictionary 182 (9th ed. 1998)). While this authority is broad, the disputed regulation sets two conditions upon the exercise of this authority. These condition precedents are that the cause must be (1) “affecting the legality or validity” (2) of “any mining claim.” See 43 C.F.R. § 4.451-1. Thus, the “expansive” word “any” refers both to the “cause” for the initiation of the contest proceeding as well as to the “mining claim” at issue. In other words, the regulation is written in the broadest terms possible.

Rather than focus on the key terms of “any cause” related to “any mining claim,” the plaintiff seizes upon the phrase “affecting the legality or validity,” to argue that this “reference ... is in the present tense.” See Pl.’s Mot. at 13. As noted, according to the plaintiff, 43 C.F.R. § 4.451-1 “does not refer to the ‘historical validity’ of the mining claim,” but rather is “limited to determining the legality or validity in the present.” Id. (emphasis in original). As a result, under the plaintiffs reading of the disputed regulation, “[a] contest complaint which does not seek a determination of present legality or validity is not within the scope of this regulation.” Id. Notwithstanding the fact that an OHA ALJ adopted this same construction of the regulation in the 2007 Jurisdictional Decision, this argument that OHA is limited to making validity determinations only as of the present time is specious for at least three reasons.

First, contrary to the plaintiffs interpretation, the phrase “affecting the legality or validity” does not indicate “the present,” but rather no time tense at all. This gerund phrase functions to describe the subject matter of the contest proceeding that may be initiated by the government, without constraint on the timing of when that proceeding is brought or the point in time when the mining claim is subject to evaluation.

Second, the other clauses in the regulation also impose no time constraints on when the “cause,” which prompts the need for the contest proceeding and a determination of a mining claim’s validity, may arise. The cause affecting the validity of a mining claim may arise in the past and the effect of that cause may be determined as of that time. In other words, the plaintiffs construction of the disputed regulation, and by extension the OHA ALJ’s 2007 Jurisdictional Decision, reads into the regulation a time limitation requiring a determination of validity only as of the “present” time. The plain meaning of “any cause,” authorizes a determination of validity that, depending upon the nature of the cause, may be as of the time of the cause’s effect, which may not be in the “present” time. The plaintiff incorrectly conflates the timing of a determination, which is obviously made in the present time, with the date when a mining claim may be deemed valid. See Pl.’s Mot. at 15 (conceding that “Secretary may institute a challenge to the validity of a mining claim at any point in time,” but opining that this “does not mean the Department may contest the validity of mining claims as of any point in time”) (emphasis in original). Contrary to the plaintiffs opinion, a mining claim may be deemed valid or not, as of any date covered by the broad swathe of time when “any cause” may arise.

Finally, if the Secretary “intended that its mining claims validity determinations be limited to specific instances and specific dates, then the government contest regulation could easily have been written in this manner.” Defs.’ Opp’n at 25. The defendant correctly points out that this regulation has “no part ... limiting it to only present circumstances” and does not “state “ ‘any present cause’ or ‘present legality or validity’ ” as a limit on contests. Defs.’ Opp’n at 19. In other words, the disputed regulation does not limit, as the plaintiff contends, the “cause” triggering the need for a contest proceeding to those affecting the validity of a mining claim in the present time but instead more broadly authorizes a contest for “any cause.” As the defendants point out, “[t]o read the regulation as stringently as does Plaintiff is simply to read ‘any cause’ out of the regulation.” Defs.’ Opp’n at 25. Such cherry-picking of regulatory language does not lead to accurate interpretation or appropriate application. See Fin. Planning Ass’n v. SEC, 482 F.3d 481, 488 (D.C.Cir.2007) (“To read out of a statutory provision a clause setting forth a specific condition or trigger to the provision’s applicability is ... an entirely unacceptable method of construing statutes.” (quoting Natural Res. Def. Council v. EPA, 822 F.2d 104, 113 (D.C.Cir.1987)).

Changing tack, the plaintiff also contends that “the mere filing of a taking claim is not a cause affecting the legality or validity of the mining claims.” PL’s Reply Supp. Mot. Partial Summ. J. (“PL’s Reply”) at 5, ECF No. 17 (emphasis in original); id. at 7 (“a takings lawsuit is not a ‘cause affecting the legality or validity’ of a mining claim”). Consequently, in the plaintiffs view, a referral for an administrative determination of claim validity arising from a takings claim does not confer authority under the disputed regulation for the initiation of a contest. See id. at 12 (“to read the regulation as authorizing contest proceedings simply because a takings claim, the presence of which has no effect on the legality or validity of the claims, is to read ‘any cause affecting the legality or validity’ out of the regulation.”). This contention simplistically conflates the legal questions raised in the plaintiffs CFC complaint with the underlying question posed in the administrative proceeding. The “cause” for the initiation of the contest hearing is not, as the plaintiff suggests, his taking claims pending in another tribunal, but the lack of any validating discovery on the plaintiff’s mining claims that “could [ ] have been marketed at a profit as of either 1994 or 2000.” AR 7469 (Contest Com-plaint ¶ 5.1).

In analogous circumstances, the Supreme Court has expressly approved the referral of claim validity determinations to DOI as “the administrative agency that has special competence in the field.” Best, 371 U.S. at 338, 83 S.Ct. 379. In Best, the government sought to condemn property with unpatented mining claims, inherently raising the issue of the validity of appellants’ mining claims since, if valid, the claimants were entitled to just compensation for the taking of their claims. Id. at 340, 83 S.Ct. 379 (remarking that “entry into possession marks the taking, gives rise to the claim for compensation, and fixes the date as of which the property is to be valued”). The Supreme Court reversed the appellate court’s decision that “the validity of the claims was, of necessity, left to judicial determination” because the condemnation suit was in Federal court. Id. at 338, 83 S.Ct. 379. Noting DOI’s “plenary authority over the administration of public lands,” id. at 336, 83 S.Ct. 379, as well as the different purposes of the condemnation case “to obtain immediate possession” of the property and the administrative proceeding to determine claim validity, the Court concluded “that the District Court acted properly in holding its hand until the issue of the validity of the claims has been resolved by the agency entrusted by Congress with the task.” Id. at 340, 83 S.Ct. 379. Just as in Best, where the compensation that would be due upon condemnation turned on the validity of the mining claims located on the condemned property, the compensation due to the plaintiff in his CFC complaint turns on the validity of his mining claims, which matter DOI has “plenary authority” to decide. The “cause” of the administrative proceedings in both Best and here was not the federal suit, as the plaintiff suggests, but the fundamental question of whether the mining claims are valid, a question plainly within the' authority of DOI and its OHA to determine.

The 2008 IBLA Decision relied upon the plain and unambiguous meaning of the disputed regulation to conclude that “there is nothing in the applicable statutes, Departmental regulations, or case law that restricts mining contests in the manner suggested by [the 2007 ALJ Ruling].” Freeman, 174 IBLA at 296; AR 1188. Rather, the legal claim that a taking occurred raises the separate mixed legal and factual question of whether the property interest underlying such taking claim was valid as of the date underlying the alleged taking event. Both the statutory authority granted to the Secretary and the delegated authority to the OHA set out in the disputed regulation are sufficiently broad in scope to authorize the government to initiate a contest proceeding to accomplish the task of answering the question regarding the validity of the property interest.

Since the plain language of the disputed regulation supports this conclusion, not surprisingly, the 2008 IBLA Decision observed that DOI’s authority to perform this task of “determining] claim validity as of any point in time has long been recognized by the courts.” Freeman, 174 IBLA at 295; AR 1187. The IBLA’s decision that DOI “can initiate a contest and an ALJ can determine the validity of mining claims as of the date of alleged takings,” AR 1186, is not only entitled to substantial deference as an agency interpretation of its own regulation, but also is a clearly reasonable conclusion to be reached based on the plain language of the disputed regulation. Thus, the defendants understandably urge that “[bjecause the government contest regulation is written so broadly and is plain on its face, no further analysis is necessary to conclude that the contest at issue was properly filed under 43 C.F.R. § 4.451-1 ... [and] OHA has jurisdiction.” Defs.’ Opp’n at 16.

Nevertheless, in the face of the plaintiffs challenge, the Court proceeds to discuss how IBLA’s interpretation of the disputed regulation is both consistent with DOI policies and furthers the purposes of the Mining Law.

B. 2008 IBLA Decision Comports with DOI Policies and Furthers Purpose of the Mining Law

The plaintiff contends that the 2008 IBLA Decision neither comports with DOI policies, as reflected in the BLM Handbook titled “Mineral Reports — Preparation and Review,” No. 3060 (“BLM Handbook”), Pl.’s Mot. at 23-24, nor furthers the statutory purposes of the Mining Law, id. at 24. These arguments are unavailing.

1. DOI Policies

The plaintiff relies on a provision of the BLM Handbook that provides guidance for validity determinations of mining claims on “land open to entry” and instructs that “the discovery date is the date of the field examination by the Mineral Examiner or the hearing.” Pl.’s Mot. at 24 (citing BLM Handbook at .081C1). The plaintiff points out that this guidance is consistent with BLM’s Mineral Commodity Pricing (“MCP”) policy, 65 Fed. Reg. 41,724, AR 7246, which provides that, “where there is no patent application and no withdrawal,” mining claim validity determinations are made “as of the date of the mineral examination.” Pl.’s Mot. at 24 (quoting AR 7197 and AR 7247) (emphasis in plaintiffs motion)). According to the plaintiff, these policies “demonstrate the longstanding policy of the Department to determine the validity of mining claims using current, as opposed to historical, information, except where there is a withdrawal or a patent.” Id. at n.37. Contrary to the plaintiffs contention, the 2008 IBLA Decision does not conflict with these cited BLM policies.

At the outset, notably, the IBLA is not bound by the BLM Handbook, which sets out DOI internal guidance. See Byrd v. Jossie, 2009 WL 348733, at *7, 2009 U.S. Dist. LEXIS 10455, at *21 (D. Or. Feb. 11, 2009) (“BLM manuals, although not legally binding, ... set forth the agency’s policy and procedures”) (internal citation omitted); United States v. Michael R. Mark Anthony, 180 IBLA 308, 343 (2011) (explaining “that while BLM employees may be obliged to follow internal BLM instructions, such instructions do not bind this Board or the public.” (citing Biodiversity Conservation Alliance, 174 IBLA 174, 180 (2008) and Wyo. Outdoor Council, 171 IBLA 153, 166-68 (2007))); Mike & Sandra Sprun-ger, 150 IBLA 64, 73 (1999) (“The BLM Manual is not promulgated with the same procedural protections associated with Departmental regulations, and [the IBLA is] therefore not bound to follow it.”); M.L. Inv. Co. v. BLM, 130 IBLA 376, 391 (1994) (finding that “the BLM Manual is not promulgated pursuant to the procedures required [under law] and thus does not have the force and effect of law.” (citing United States v. Harvey, 659 F.2d 62 (5th Cir. 1981))); Kugel v. United States, 947 F.2d 1504, 1507-08 (D.C.CSr.1991) (citing Schweiker v. Hansen, 450 U.S. 785, 789, 101 S.Ct. 1468, 67 L.Ed.2d 685 (1981)) (internal policy guidelines create no legal duty on the agency); Phillips Petroleum Co., 117 IBLA 255, 260-61 (1991) (finding that “[t]his Board is not bound to follow internal agency interpretative pronouncements such as the Procedure Paper” at issue which “provid[ed] internal guidance” on valuation of natural gas liquid products for royalty purposes (citing Hansen, 450 U.S. at 789, 101 S.Ct. 1468 and United States v. Kaycee Bentonite, 64 IBLA 183, 214 (1982))); accord Hansen, 450 U.S. at 789-90, 101 S.Ct. 1468 (holding that Claims Manual “for internal use by” Social Security Administration (“SSA”) employees “is not a regulation. It has no legal force, and it does not bind the SSA.”). Nor is the IBLA confined in its reasoning or decision-making to the MCP policy, which was issued by an Assistant Secretary of the Interior. See 65 Fed. Reg. 41,726 (July 6, 2000) (MCP policy issued under signature of an Assistant Secretary of the Interior); Michael R. Mark Anthony, 180 IBLA at 345 (finding that the IBLA is not bound by non-adjudicative statements of an Assistant Secretary because “the Assistant Secretary does not have authority to issue policy statements that bind all other offices of the Department not subordinate to the Assistant Secretary”); Robison v. Bureau of Land Mgmt., 120 IBLA 181, 183 (1980) (“In any case, decisions of subordinate officials of the Department have no prece-dential value.”).

Thus, even if the policies articulated in the BLM Handbook and the MCP policy applied to a validity determination made in the context of evaluating an alleged taking, which they do not, any lack of adherence by the IBLA to those policies would not, standing alone, render the 2008 IBLA Decision arbitrary or capricious.

Turning first to consideration of the BLM Handbook, the plaintiff correctly recites the guidance set out in the section titled “Determination Dates for Mineral Reports.” This guidance suggests two possible dates for discovery, stating that, for certain validity determinations, “the discovery date is the date of the field examination by the Mineral Examiner or the hearing,” BLM Handbook, § .08D.3. The plaintiff overlooks the significant limitation on the use of this guidance, however. Specifically, the very first section of the Handbook sets out its “Purpose” to provide “minimum standards for preparing, reviewing and approving energy and mineral resources reports in response to a specific action or application listed in” four other sections of the handbook. BLM Handbook § .01. None of the enumerated actions requiring a mineral report that are covered by the scope of this Handbook refer to alleged takings claims. See, e.g., id. § 11 (“Actions Requiring a Mineral Report”); id. § .21 (“Actions Requiring a Coal Mineral Report”); id. § .22 (“Actions Requiring an Other-Solid Leasable Minerals Report”); and id. § .31 (“Actions Requiring a Fluid Minerals Report”). This explicit limitation on the application of this guidance is a good reason “not to treat the cited guidance as exhaustive,” as the defendants urge, noting “that there are obvious omissions.” Defs.’ Opp’n at 32 n.9.

Similarly, the MCP policy undercuts, rather than supports, the plaintiffs view that historical dates may not be used to determine the validity of a mining claim. In order to provide “a consistent approach in determining claim validity,” this policy outlines various steps “to determine the price of mineral commodities when analyzing the economic marketability of a mineral deposit,” 65 Fed. Reg. at 41,725, and facilitate the evaluation of “whether a mining claim contains a ‘discovery’ of a valuable mineral deposit.” 65 Fed. Reg. 41,-724. This policy makes clear that the validity of a mining claim may be determined at the time “the claimant seek[s] to patent the claim,” but also “at any other time for any other reason.” Id. The “particular significant date” for determining the validity of the claim may vary “depending, for example, on whether [the claimant has] filed a patent application or [th