YaSheng Group has staked an additional 48 placer mining claims covering 960 acres in La Paz County, Arizona near the Plomosa Mountain load and placer claims the company optioned in 2011. The Plomosa Mining District is characterized by linear mountain ranges separated by alluvium-filled basins. In southern Arizona, a belt of Precambrian metamorphic rock ranges forms a transition zone between the younger, predominantly volcanic desert mountains of the south and the folded and faulted highlands of central Arizona.