Apollo’s three projects are located in two historic silver mining districts, within mining-friendly jurisdictions. The Calico District hosts both the Waterloo and Langtry projects in a historic silver mining district located in San Bernardino County, California. The district has produced a reported* 15 to 20 million ounces. 

*Harthrong, Deborah S., Renewed Mining Activity in the Calico Mountains: California Geology, October,1993, p 216-225.

Apollo’s district-scale land packages consist of 2,950 acres in the Calico District, and another +2,000 acres in the Arizona Silver District. In addition to the already identified mineralization, there is significant exploration upside in both Calico and Arizona.
San Bernardino County hosts more active mining operations, both metallic and non-metallic, than any other county within the United States.