Kyanite Mining Corporation is the world's oldest and largest producer of industrial grade kyanite and calcined kyanite (mulli ... te). KMC is a fourth generation family owned company located at 30 Willis Mountain Plant Lane, Dillwyn, Virginia, United States. At Kyanite Mining Corporation we strive to bring to market consistently high quality kyanite and mullite concentrates, produced in an efficient, safe and environmentally sound manner, all the while providing world-class service to our customers. We understand that many industries all over the world depend on the quality of our material and the timeliness of its delivery, and we accept that responsibility with pride and eagerness. read more