waste rock

waste rock

[′wāst ‚räk]
(mining engineering)
Valueless rock that must be fractured and removed in order to gain access to or upgrade ore. Also known as muck; mullock.
References in periodicals archive ?
In preparation for potential construction at Relief Canyon, including future heap leach pads, haul roads and waste rock storage facilities, Ames Construction has started the initial land clearing.
8 meters of sonic drilling was completed to collect geotechnical, hydrological, geothermal, and hydrogeological information for the tailings management facilities and waste rock dump for the project in support of the upcoming Pre-Feasibility Study, or PFS.
Post-pillar cut and fill and longhole open stoping with cemented waste rock backfill would be the major mining methods.
The Project includes an open pit gold mine with four open pits; mine access roads; waste rock disposal areas; crushing, screening, and agglomeration facilities; a heap leach facility; an adsorption, desorption, and recovery plant; and ancillary facilities.
While the mine was operating, approximately 328 million tonnes of acid-generating waste rock were excavated and deposited in nine large waste rock piles.
Jade mining generates piles of waste rock, and workers climb the heaps to look for the precious stones left behind by large-scale industrial mining firms.
300-metre pile of waste rock accumulated during the mining process
Other topics of the 400 papers include the collapse of a steel truss building under snow, thermal displacement of a cable-stayed footbridge, numerical simulation of water flow in mine waste rock piles, a rail abrasion detection system based on image processing, and driving behavior during the yellow light at urban intersections.
To date, West Elk also recycled more than 761,000 lb of metal materials and continues to minimize the creation of waste rock by effectively utilizing its coal preparation facility.
The ability to immediately remove the waste rock using XRT allows it to be placed back in the mine, eliminating tailings (defined as any byproduct of the mining process considered noneconomic or that needs to be disposed of).
The Screens Building, which was used to sort the coal from the waste rock and debris, dates from around 1904.

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