011-6 Wyo. Code R. § 6-11
(a) The value of the gross product as determined pursuant to these rules constitutes the taxable value; provided, however, that any portion of the gross product of a mineral attributable to an exempt interest shall not be subject to an ad valorem or severance tax.
(b) After the Department has determined the taxable value of a mineral, it shall immediately notify by mail the operator or interest owner of the values so determined.
(c) For ad valorem tax purposes, the Department shall annually certify pursuant to W.S. 39-14-102(d) for coal, W.S. W.S. W.S. 39-14-202(a)(iu) for natural gas, crude oil or lease condensate, W.S. W.S. W.S. 39-14-302(d) for trona, W.S. W.S. W.S. 39-14-402(c) for bentonite, W.S. W.S. W.S. 39-14-502(c) for uranium, W.S. W.S. W.S. 39-14-602(c) for sand and gravel, W.S. W.S. W.S. 39-14-702(c) for other valuable deposits the taxable value of mineral production to the county assessor in which the mine or oil and gas property is located.
011-6 Wyo. Code R. § 6-11