US20130209204A1 - Cargo container to deliver sand to a ...
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.
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