Excalibur Industries is on a quest for uranium. Through subsidiary Mountain West Mines, the company holds interests in uranium properties, including some 85 patented claims, in Wyoming's Powder River Basin. Excalibur hopes to draw royalties from its mineral interests, but the company's contractual rights have been involved in a legal dispute. Excalibur has sold six of its Powder River Basin properties (accounting for about half of its claims) to Canadian mining company Uranerz Energy Corporation. Colorado silver claims held by Excalibur were sold in 2004.