The mission of the Mineral County Development Authority is to enhance the welfare of all Mineral County citizens. For businesses and industries looking to expand or to relocate in Mineral County, West Virginia. The Mineral County Development Authority, is a convenient, reliable resource for the information you need. We are here to help and to make transitioning easier, and have the knowledge to assist and inform you. Mineral County Development Authority (MCDA) works to make business location or expansion convenient.