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  1. As used in the petroleum industry, a volumetric unit of measurement equivalent to 42 U.S. gal (159.0 L). AGI
  2. The cylindrical part of a pump from which the movement of the piston causes a liquid or gas to be forcibly ejected. Also, the cylindrical part of a hydraulic jack or of a hydraulic-feed mechanism on a diamond drill. Long
  3. The drum of a hoist. Long
  4. A cylindrical container or drum having a capacity of 55 gal (208.2 L). Long
  5. The water passage in a culvert. Nichols, 1
  6. Commonly, although incorrectly, used as a syn. for core barrel. See also: drum

Source: Dictionary of Mining, Mineral, and Related Terms

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