Tax rates on severed natural resources except coal and

uranium. The severance tax is imposed at the following rates on the taxable value determined under Section 7-26-4 NMSA 1978 of the following natural resources: A. potash 2 1/2% B. copper 1/2% C. timber 1/8% D. pumice, gypsum, sand, gravel, clay, fluorspar and other nonmetallic minerals 1/8% E. lead, zinc, thorium, molybdenum, manganese, rare earth and other metals 1/8% F. gold and silver 1/5%