Specifications include, but are not limited to: Packing shall be in 1,800-pound returnable bags. Bags shall be approximately 34" x 34" x 36" returnable polypropylene "chase type" bags. The material shall be a minimum 6½-ounce weave material. The bag shall have a fully opened closure skirt on top with a discharge chute 30" long with an approximate 10" diameter discharge opening. The discharge opening shall have a #6 nylon cord. The bag shall have four (4) lifting loops sized to allow lifting from a central lift hook when the bag is full. The bag shall have an approximately 40" x 40" x 88" minimum 3 mil polyethylene inner liner assembled to prevent the liner from slipping and clogging the discharge chute during loading operations. The liner bag shall be of one (1) piece construction with open top and closed bottom to allow easy opening of the liner through the discharge chute.