Nevada Mining Townsite Conveyance Act of 2012

Nevada Mining Townsite Conveyance Act of 2012 - Directs the Secretary of the Interior, acting through the Bureau of Land Management (BLM), to convey, to the counties in which they are situated, all interest of the United States in certain mining townsites in Esmeralda and Nye Counties, Nevada.

Requires a county receiving a site to reconvey the property to anyone with a valid interest in the site. Requires, for purposes of proving a valid interest, that anyone making the claim must have occupied the site for a least 15 years immediately before enactment. Prohibits a county from recognizing a claim submitted more than 10 years after enactment.

Requires the preservation and protection of all historic and cultural resources on conveyed or reconveyed sites.