Wyo. Stat. § 35-10-301: General regulations.

It shall be unlawful for any person or company to store any gunpowder or any other explosive material at a less distance than one thousand (1,000) feet from any house or habitation, when more than fifty (50) pounds are stored at the same place; but it shall be unlawful to place or to keep any powder or other explosive material, in any house or building occupied as a residence, or any outbuilding pertaining thereto.