Research Associate

Mining permits could be obtained by individual Navajos only. Permit holders could assign the mining rights to another individual or a company; like the permits, these assignments had to be approved by the Tribal Council and the BIA. Leases would be issued directly by the BIA, and approved by the Secretary of the Interior. Permits were issued for a 2-year period and could be renewed for an additional 2 years. Leases by contrast, were issued for periods up to 10 years. No more than 960 acres of tribal land could be held by any one company or individual. Both the permittee and the tribe would receive royalties from ore production. Based on the mine value of the ore, the tribe would receive between 10 % and 20 % royalties and the permittee between 2 % and 5 % royalties. PREVIOUS STUDIES Leasing and mining of the carnotite deposits in the Carrizo Mountains for radium extraction was described by Chenoweth (1989). Details of the vanadium production in the Carrizo Mountains area were presented in Chenoweth (1991). An earlier report by Chenoweth (1984) summarizes the uranium-vanadium production in the eastern Carrizo Mountains. Anderson (1981) and described photographed the condition (in 1980) of the Plot 7 mines in hi