Sulphur Gulch: The Mistaken Mineral That Launched Questa's Mine
Few great industries begin with a case of mistaken identity, but Questa's mining story does. In Sulphur Gulch, the ground held a soft black mineral and a yellow earth, and for a long time nobody knew what they really were. The black mineral was thought to be graphite, and the yellow earth was thought to be sulfur, the very substance that gave the gulch its name.