General Info

JJennmar of Virginia has been serving the coal mining industry since its incorporation in 1965. The company began operations with the purchase of the manufacturing machinery to produce steel roof bolts in Cresson, Pa. Jennmar offers advanced line of roof control products to coal and hard rock producers. Keystone Mining Services, a subsidiary of Jennmar of Virginia, provides advanced engineering services to the coal, metal and tunneling markets. It provides a wide range of advanced engineering services to cost-effective mining and tunneling. It also offers a research and development program, and maintains three steel processing slitting lines. Its services include computer modeling, stress analysis, pillar design, subsidence prediction, long wall shield design and site-specific ground control design. It also offers services, such as product development and testing, field services, data collection, and recommendations. Jennmar of Virginia is located in Pounding Mill, Va.