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.
References in periodicals archive ?
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).
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.
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.
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.