jackleg


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jackleg

[′jak‚leg]
(engineering)
A supporting bar used with a jackhammer.
References in periodicals archive ?
Heavy jackleg drills are difficult to move and can quickly wear out the operator.
So you're able to work underground now, because you're driving trucks; you're not having to pick up a 120-pound jackleg drill," she said.
I said, even if Hoagland was racist--because our ability to talk and discuss literature has to at some point move beyond jackleg character analysis.
But God can use even the efforts of jackleg preachers to enable the words of human beings to become the Word of God (1 Thess.
The S250-M3 comes in three primary variations to match specific customer needs - jackleg, stoper and sinker.
Blajer said Roy was using a jackleg drill to drill a wall support, while standing on a platform 250 feet above the 8,200 foot level of the mine, when the accident occurred.
Proposed mining methods include conventional open stoping with jackleg drills and slushers where the orebody is narrow or requires more selective mining and mechanized blasthole stoping where the orebody is thicker or requires less selective mining.
They include a father who is a reformed murderer and jackleg preacher "near eighty" (154) and a mother who is "only about thirty-five" and "hard as beef jerky" (155).
During August we had three compressors and six jackleg drills working on access for the drills.
The first-phase exploration program has been specifically designed to test underground extensions of known deposit areas, as well as underground extensions of areas which have already produced strong results from reverse circulation drill holes, underground jackleg samples and underground drift and crosscut samples.
In zones where the horizontal width is less than 8 feet, slusher mining and jacklegs will be used for mining to a minimum width of 6 feet.
Make Your Color Linger Jacklegs no-fail secret for making lipstick last?