vbl. sb. [f. STOPE v. + -ING1.] The action of the verb STOPE.

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1778.  W. Pryce, Min. Cornub., 97. When met with in stopeing, or driving as aforesaid, they commonly say, ‘It is a stope of dead ground.’

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1903.  Westm. Gaz., 16 Sept., 9/1. We have good reason to believe that actual stopings … will expose a much larger amount than can now be seen.

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  attrib.  1877.  Raymond, Statist. Mines & Mining, 320. Besides this, stoping ground for 10 men is opened.

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1884.  Knight, Dict. Mech., Suppl. 868/1. Stoping Drill (Mining.) One for excavating drifts or horizontally lying beds or steps [etc.].

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