Atlas Master Line HO 20006734 5701 Plastics Hopper, Cain Chemicals #36809Atlas Master Line HO 20006734 5701 Plastics Hopper, Cain Chemicals #36809 Part Number: 840245202094 Description Atlas Master Line HO 20006734 5701 Plastics Hopper, Cain Chemicals #36809 The 5701 cubic foot covered hopper was introduced in the early 1970s for transporting bulk plastic pellets. Since 1972, ACF has built nearly 15,000 cars. Most of these were acquired by private companies including leasing companies, chemical companies, oil companies,