Locatable minerals are those that have been described as “valuable mineral deposits” and include precious and base metal ores such as gold, silver, copper, or lead, and certain industrial minerals such as gypsum, chemical grade limestone, chemical grade silica sand, and diatomaceous earth. Uncommon varieties of mineral materials such as pumice, rock, and cinders also are regulated as locatable minerals. These minerals are regulated under the General Mining Law of 1872, as amended, and the Surface Use and Occupancy Act of July 23, 1955. Lands are either open or closed for locatable mineral development.
The Nevada State Office maintains mining reclamation bonds for the locatable minerals program. In addition, the State Office is responsible for oil and gas and geothermal bonding related to drilling on its leases. The BLM regularly reviews and updates bonds and financial guarantees for notices and plans. Notices are reviewed every two years. Plans are reviewed every three years.