Wyo. Stat. § 37-9-603
Whenever any verified account mentioned in the last preceding section shall be placed in the hands of any railroad company or its agent as above stated, it shall be the duty of such company to furnish the contractor with a copy of such verified account, so that if there be any disagreement between the debtor and creditor as to the amount due the same may be amicably adjusted, and if the contractor or subcontractor, if he be the debtor, shall not, within ten (10) days after the receipt of such account, give the said railroad company or its agent, written notice that the claim is disputed, he shall be considered as assenting to its payment, and the railroad company or its agent, shall be justified in paying the same when due and charging the same to the contractor. The person or persons to whom any such debt is due and who shall deliver a verified account thereof as above provided may recover the amount thereof in an action at law, to the extent of any balance due by the railroad company to the contractor at or after the time of delivering the verified account; provided, that nothing contained in this section or in section 2 of this act shall interfere with the right of action upon the bond or bonds provided for in section 1 of this act, or against the railroad company for the full amount of any such debt in case of a failure of the company to take a bond.
W.S. 37-9-603