Tom,
I am going to copy and paste information that should answer both of your questions.
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The discovery of a valuable mineral deposit within the limits of a mining claim located on public lands in conformance with state and Federal statutes validates the claim. The classic statement of a mining claim as property is found in the U.S. Supreme Court case of Wilber v. rel. Krushnic, 280 US 306 (1930):
When the location of a mining claim is perfected under the law, it has the effect of a grant by the United States of the right of present and exclusive possession. The claim is property in the fullest sense of that term…The owner is not required to purchase the claim or secure patent from the United States; but so long as he complies with the provisions of the mining laws, his possessory right, for all practicable purposes of ownership, is as good as though secured by patent.
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In Nancy M Swallow, supra, the Board summarized the law concerning the segregative effect of a valid mining claim: “…As the Court stated in St. Louis Mining & Milling Co. v. Montana Mining Co., 171 U.S. 650, 655 (1898):
Where there is a valid location of a mining claim, the area becomes segregated from the public domain and becomes the property of the locator. Such segregation amounts to an appropriation of public land to private use so far as subsequent competing entries by others.”
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Under the Mining Law of 1872, it not only authorizes, it also reveals the various stages of the granted right to mine and uses reasonably incident thereto. The Cadastral surveying is based in this law; however to complete the patenting process, the citizen is required to hire the surveying of the boundaries of his location (30 USC 28-2 & 39). Entering, prospecting and occupation begins the process to find the valuable mineral deposit (30 USC 22); when it is found, it is located by placing monuments and it is filed with the county, where found, and it is filed with the BLM state office (Section 28 and 28(a) through (f)). These actions appropriate the land from the public domain to private use (30 USC 26). It is BLM’s job, when necessary, to certify or validate the mineral deposit and the Forest Service is required to relinquish the land; the mining location is property and as such it can be re-conveyed by transfer of deed to any other person by inheritance or by other instrument.