Miner Enterprises helps to keep the bump and grind to a minimum for some major enterprises. The rail equipment company's draft gears provide cushioning behind railcar couplers -- the connectors that link railcars and make a train a train. Miner Enterprises also makes side bearings, which help control the ride and curving characteristics of railcars and brake beams. Other products include discharge gates for covered comestibles, chemicals, and coal; hatch covers; ballast hopper railcars; and branded TecsPak elastomer springs; as well as replacement parts.