Casing

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Revision as of 02:02, 7 December 2006 by Ok (talk | contribs) (Based on Glossary of Bridge Terminology; Chapter LXXX of J.A.L. Waddell's Bridge Engineering (New York: Wiley, 1916))
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A wooden tunnel for the powder hose in blasting. The outside pipe which is used in making borings. A covering.