Colo. Rev. Stat. § 34-44-106
The working tenant shall render to the nonworking tenant, at least once in every six months after commencing said operation and also within thirty days after completing said operation, a written statement giving a true, full, and fair account of all of the expenditures and expenses of said work and mining operation, and of the proceeds of all ore or minerals extracted and sold, and the net profits or losses of the operation from the beginning of said operation to the date of such statement. If said operation has been conducted at a net profit the working tenant shall at once pay to the nonworking tenant his proportionate share of said net profits, and if he fails to do so, his right to continue such mining operation under the provisions of this article shall at once cease. In case the address of any nonworking tenant is unknown, or he has failed to notify the working tenant of a place at which, or an agent to whom, payment may be made, or if he cannot be conveniently found so that payment may be made to him of his proportionate share of said net profits, or in case any nonworking tenant is dead and there is no known executor or administrator of his estate in the state of Colorado qualified to receive such statement and payment, the working tenant may deposit said statement and payment with the state treasurer who shall receive said deposit under the same obligations and with like effect as other deposits made under the provisions of section 15-12-914, C.R.S.
C.R.S. § 34-44-106