ore pass

ore pass

[′ȯr ‚pas]
(mining engineering)
A vertical or inclined passage for the downward transfer of ore.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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An interior working shaft and an ore pass with a crushing and loading station at its bottom were raised from the 2200L adit to the Fairview mine 1148 feet (350 m) above (primary crushing continued to be done underground until the 1940s).
Great mining camps of Canada 5. Britannia Mines, British Columbia
Good crystals of vivianite and ludlamite were also found in stopes between the 7000 and 6850 levels, north of the 491 ore pass and near the top of the Pierce winze in the Chicago zone.
The Blackbird mine: the Blackbird mine, located in east-central Idaho, has the dual distinction of being the only primary producer of cobalt in the United States, and also the source of some of the world's finest crystals of ludlamite and vivianite. The mine closed in 1982 and is currently undergoing environmental remediation, so it is unlikely that any additional specimens will ever be collected there
On the night shift of June 8, 2011 Jason Chenier and Jordan Fram were working at an ore pass on the 3,000 foot level of Stobie Mine.
Vale fined in fatal mine accident
Because of the ore's high grade, once mining has been completed in a sublevel, the floor is cleaned all the way to the ore pass, so that any spilled gold is recovered.
A remarkable turnaround
Penguin's robots are being tested with the goal of removing hazardous jobs from the mine, including taking scans of an ore pass after blasting or working near areas of liquefaction.
Robot recon: Sudbury-born mine tech assists in Elliot Lake mall excavation

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