open-pit mining

(redirected from Open cut mining)

open-pit mining

[¦ō·pən ¦pit ′mīn·iŋ]
(mining engineering)
Extracting metal ores and minerals that lie near the surface by removing the overlying material and breaking and loading the ore. Also known as open-cast mining; opencut mining.
References in periodicals archive ?
On April 30 this year the Northern Territory Supreme Court ruled that the October 2006 approval granted to Xstrata-owned McArthur River Mining (MRM) by the NT Government to move from underground mining to open cut mining was illegal.
The two year study examined the feasibility of open cut mining and processing the large Ramu laterite resource using modern pressure acid leach technology which would yield high metallurgical recoveries of both nickel metal and cobalt oxide products, and included input from major engineering groups experienced in this technology and in the Papua New Guinea operating environment.
Oceana Gold is currently open cut mining their Globe Progress mine, which produced approximately 640,000 ounces from the underground workings, prior to being converted into an open cut mine with an estimated resource of 1 million ounces.
In addition, the contract would mark Macmahon retain on site until March 2016, for rendering the complete scope of open cut mining activities, like drill and blast, load and haul, crushing and conveying, and the construction of an engineered waste disposal dam at the Martha open pit.
Anomalous Economic gold intersections were returned from drill holes outside the above identified Main Zone envelope, and these would be recovered during any open cut mining campaign.
The new Ellendale 4 mine, which comprises open cut mining operations and a
Pierce Carson, President of Nord Pacific, stated that "if sufficient reserves can be developed, El Realito offers the attractive possibility of low cost open cut mining with a very favorable waste-to-ore stripping ratio.
Extraction of minerals is undertaken by such processes as underground or open cut mining, dredging, quarrying, the operation of wells or evaporation pans, or by recovery from ore dumps or tailings, and all supplementary activities aimed at preparing the crude materials for marketing.
The large services based mining contract will see Orica supply the full range of broken rock services for approximately 140 million tonnes of broken rock over six years for the open cut mining operation.
A total of 13 hydrogeological monitoring bores have been installed at Area A as part of DFS ground water and geotechnical assessment with respect to open cut mining studies;
The sampling results from the Clark Crosscut which is between 40-50 metres below the surface clearly indicates the strong possibility of open cut mining at Batoto with processing by simple CIP and/or heap leaching methods.
The project includes 10 open cut mining areas consisting of 16 pits; a coal handling and preparation plant; infrastructure such as office buildings, workshops, wash down facilities and fuel storage; a workforce accommodation village; and a rail spur and train loading facilities.