Canadian firm Argonaut Gold is engaged in the exploration, development and production of gold in Mexico and Canada. In Mexico the company operates two open-pit gold mines; La Colorada in Sonora state and El Castillo in Durango state. In addition, the San Agustin project in Durango state is in the construction stage. The company also has the San Antonio exploration project in Baja California Sur state, as well as other exploration projects in Mexico and Canada. Argonaut Gold was founded in 2007 and is based in Toronto.