Started in 1996, Silver Mine Subs Franchise Inc. is a chain of restaurants serving customers in more than 20 locations in the United States. Located in Tucson, Ariz., the restaurant offers a variety of hot and cold submarine sandwiches, dressings, wraps, soups, salads and drinks. In addition, it provides soft drinks, iced tea, side dishes, nachos, chips and desserts, such as cookies and brownies. The restaurant caters to customers in the states of Wisconsin, Wyoming, Arizona, Illinois and Florida.