9 jul 1872 año - General Mining Act of 1872
Descripción:
The General Mining Act of 1872 is a United States federal law that authorizes and governs prospecting and mining for economic minerals, such as gold, platinum, and silver, on federal public lands. ... Locatable minerals include but are not limited to platinum, gold, silver, copper, lead, zinc, uranium and tungsten.
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fecha:
9 jul 1872 año
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~ 153 years ago