Wyandotte Cave
Wyandotte Cave, one of the largest natural caverns in the United States, S Ind., W of New Albany; discovered in 1798. There are 23 mi (37 km) of passages and several large and beautiful chambers on five levels. Saltpeter was mined there until the middle of the 19th cent.
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Metallurgy and Mining: Terms and Concepts , mine1 / mīn/ • possessive pron. used to refer to a thing or things belonging to or associated with the speaker: you go your way and I'll go mine some… Whittaker Chambers , Whittaker Chambers
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Mining is the process by which commercially valuable mineral resources are extracted (removed) from Earth's surface. These resources include o… chamber , cham·ber / ˈchāmbər/ • n. 1. a hall used by a legislative or judicial body. ∎ the body that meets in such a hall. ∎ any of the houses of a legislatur… passage , pas·sage1 / ˈpasij/ • n. 1. the act or process of moving through, under, over, or past something on the way from one place to another: there were moo…
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Wyandotte Cave