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jumbo

jumbo  n.— «The Red Lake gold mine covers 55,000 acres of western Ontario, amid mountains, creeks, and pine forests populated by wild caribou. In its main shaft, which plunges 1,023m into the earth, drilling machines called jumbos extract...

king line

king line  n.— «“I want to climb hard routes, but I want something that inspires me” Sharma, 26, has the ability to climb just about anything anywhere. But he said he turns up his nose at any problem—no matter how challenging—that’s...

bump

bump  n.— «Dreger said data from the blowout, or “bump” as it is known in mining parlance, showed the initial motion of the earth was the same, though smaller in force, to the initial collapse. He said that analysis confirmed...

witness mark

witness mark n. generally, an intentional, accidental, or naturally occurring spot, line, groove, or other contrasting area that serves as an indicator of certain facts; in geography and surveying, a blaze, cut, hole, paint splash, or message...

leaverite

leaverite  n.— «I always carry a rock hammer and a gunny sack, and when I see a likely piece of jasper or agate, I chip a corner to see how it holds up. Like as not, the whole stone may shatter making it into leaverite (leave-‘er...

leverite

leverite n. (also leaverite) a worthless stone or rock, especially one mistaken as being valuable. Editorial Note: Paul Dickson writes in Family Words (1998, p. 79), “Heaverite, according to Raymond J. Nelson of Cody, Wyoming, is a rock that...

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