a patent or seeking to obtain title to the fee . . . .” Union Oil Co. v. Smith, 249 U.S. 337, 348-349, 39 S.Ct. 308, 311, 63 L.Ed. 635. Location and recordation of claims without actual discovery of valuable minerals, or recordation without marking the claim in compliance with federal and state law casts a cloud on the title of the United States. See Cameron v. United States, 252 U.S. 450, 40 S.Ct. 410, 64 L.Ed. 659; Davis v. Nelson, 9 Cir., 329 F.2d 840. The authority of the Secretary of the Interior, or of the Justice Department at the behest of the Secretary, to contest the validity of mining claims on public lands is not dependent upon the assertion by the United ■ States of some contemplated use for the lands in question. “Establishment of clear title to public lands is itself sufficient justification for the action.” Davis v. Nelson, supra, 329 F.2d at 846.
As the appellants observe, private claimants are prohibited from seeking federal court interference with proceedings to determine the validity of claims pending before the Department of the Interior. Once the Secretary has initiated an administrative contest, the jurisdiction of the courts is withdrawn as respects suits filed by private claimants either to halt the administrative proceedings or to substitute the court’s determination of claim validity for that of the Interior Department. See Northern Pac. Ry. v. McComas, 250 U.S. 387, 39 S.Ct. 546, 63 L.Ed. 1049; United States v. Hitchcock, 190 U.S. 316, 23 S.Ct. 698, 47 L.Ed. 1074; Brown v. Hitchcock, 173 U.S. 473, 19 S.Ct. 485, 43 L.Ed. 772. These authorities, however, do not foreclose the government’s entering federal court to vindicate its title to public lands, United States v. Nogueira, 9 Cir., 403 F.2d 816. Nor do the statutes conferring upon the Secretary authority over the administration of public lands constitute, by their terms, an exception to federal court jurisdiction under 28 U.S.C. § 1345. To read into these statutes an implied exception to the general grant of jurisdiction would, in cases like the present one, pointlessly defeat the policy of the mining laws to keep the public mineral lands open to qualified locators and thereby to encourage discovery of valuable deposits. See 30 U.S.C. § 22; United States v. Coleman, 390 U.S. 599, 88 S.Ct. 1327, 20 L.Ed.2d 170. Were we to insist upon full administrative consideration of patently invalid claims, followed by court review of administrative action, we would needlessly prolong the period during which qualified locators would forbear from discovery work on the clouded lands.
We therefore hold that the United States may, at its election, proceed either in the administrative tribunal of the Department of the Interior or, under 28 U.S.C. § 1345, in the district court to clear title to public lands where the validity of unpatented mining claims is at issue.
Best v. Humboldt Placer Mining Co., 371 U.S. 334, 83 S.Ct 379, 9 L.Ed.2d 350, is not to the contrary. There the Supreme Court held that the United States could properly resort to administrative proceedings even though it had possession of the property by virtue of a condemnation suit instituted in federal court. The Court’s decision in Best, significantly, bore upon the propriety of coordinated judicial and administrative inquiries into the government’s rights in mineral lands. Although the Court sounded general approval of district court abstention with respect to issues uniquely within the particular expertise of the Department of the Interior (see discussion infra), Best cannot be read to limit federal court jurisdiction over civil suits initiated by the government. Rather the law remains that the United States, having title to public lands, is free to vindicate its rights therein either before the Interior Department or in the courts “at its election if proceedings are initiated by it.” Kennedy v. United States, 9 Cir., 119 F.2d 564, 565. See also United States v. Schultz, N.D.Cal., 31 F.2d 764; United States v. Mobley, S.D.Cal., 45 F.Supp. 407.
Appellants’ more compelling argument is that even if the district