Abstract: An intermodal container is modified to carry a fracing proppant such as sand from a quarry or source to the frac site. An upper hatch is formed at the top of the intermodal container and a lower hatch is formed in the bottom of the intermodal container. Hydraulically operating sliding gates are placed under the top and bottom hatches. A resilient liner having a bladder extends from the upper hatch to the lower hatch. The bladder expands during loading to receive the proppant therein and contracts when unloading to expel the proppant from the intermodal container.

Abstract: A cargo container is modified to carry a fracing proppant such as sand from a quarry or source to the frac site. Openings are cut in the top and bottom of a cargo container and hydraulically operated sliding doors are placed there under. A hopper module with the walls being inclined to approximately the angle of repose for the proppant is installed inside the cargo container. The hopper module is sealed inside the cargo container so that a proppant enters through the top opening at the quarry and flows out through the bottom opening at the fracing site.

Abstract: A cargo container is constructed to carry a fracing proppant such as sand from a quarry or source to the frac site. An open frame the size of a standard cargo container has an enclosed hopper therein. Upper sliding gate at a top hatch provides for loading the hopper, and a lower sliding gate in a bottom hatch provides for unloading the hopper. The bottom of the hopper is at an angle slightly above the angle of repose of the fracing proppant carried therein.