| http://www.w3.org/ns/prov#value | - In further accordance with the present invention, there is provided a system for extracting crude oil sludge from the bottom of a cargo tank, the system comprising a number of auger pumps with open tops at points along the length of the tubing to collect and pump sludge, injectors through which crude oil or other liquid is pumped to loosen the sludge collected at the bottom of the storage tank, a
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