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The Epic Interactive Encyclopedia 1998
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Epic Interactive Encyclopedia, The - 1998 Edition (1998)(Epic Marketing).iso
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D
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Derrick
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1992-09-04
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259b
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9 lines
A derrick is a simple lifting machine
consisting of a pole carrying a block and
tackle. Derricks are commonly used on ships
that carry freight. In the oil industry the
tower used for hoisting the drill pipes is
known as a derrick.
Subject by: Darren Wells