Part 2. Coal mining in Bakerton, Pennsylvania (PA). Coal mining buildings. Carts filled with coal on tracks, piles of coal, coal yard. Two mechanics work on a piece of equipment. The continuous miner automated digging machine developed by Joy manufacturing company of Pittsburgh. Coal miners no longer have to dig for coal by hand! Caterpillar treads, ripper head, conveyer belts. Loading boom swings from side to side. Men with lights on helmets get on coal carts and go down into underground mines. Machine digs for coal. Great shots of miners underground.