Persistence Data Mining, Inc

Tonogold Resources is a gold and silver exploration company that owns a range of properties in Nevada and Alaska. The company specializes in the research and reevaluation of various historical mining districts. It also focuses on the acquisition of a variety of mineral properties. Tonogold Resources advances properties through mapping, sampling, drilling and financing. The company also conducts feasibility studies and prepares geological reports. It owns the Nyac, North Springs, Red, Oddie and Tonopah Divide gold projects. Tonogold Resources King Tonopah Gold and Silver Project is spread over an area of more than 1,000 acres.

Rio Grande Resources Corporation controls uranium operations and mineral resources acquired by General Atomics from Chevron Resources in 1991. The company has expertise in reclamation of open-pit and in situ leach(ISL) mines, as well as mill decommissioning and reclamation. Founded in 1955 as a division of General Dynamics, General Atomics specializes in high-technology systems development ranging from the nuclear fuel cycle to remotely operated surveillance aircraft, airborne sensors and advanced electric, electronic, wireless and laser technologies. General Atomics also manufactures, operates and services unmanned aerial vehicles. Rio Grande Resources Corporation is based in San Diego.