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 ?
With underground mining, you not only keep the flora and fauna intact on the surface, you can also reach good quality coal that cannot be accessed through open cut mining, explains Amar Bhasin, who represents METS manufacturer, Valley Longwall International, in India.
The scope of work for this contract is expected to include open cut mining and bulk earthworks for an initial period of three years, with total material movement expected to be in the order of 50 million bank cubic meters per year.
With the world's 7th largest coal reserve in Thar, the House of Habib has placed confidence in the SECMC-Thar coal, the first integrated open cut mining and power generation project, to provide the solution to the future energy needs of the country and to provide impetus for economic activity at an accelerated that will also benefit the people of Thar.
Mining: Predominantly free-dig, open cut mining with low overall strip ratio.
Coal is excavated through open cut mining operations, the shallow layers have been depleted and now the miners are working deeper, which makes output more expensive," he explained.
In other Kakadu news open cut mining at Energy Resources of Australia's troubled Ranger uranium operation ended late last year.
The IP coal mine is an open cut mining operation that commenced production in 2006, with an annual production capacity of 2,800,000 tonnes (of which coking coal for steel production accounts for approximately 70% and steam coal for electricity generation approximately 30%), mostly for the purpose of supplying coal for users in Asian countries including Japan.
The new drill discoveries share characteristics with the Julia - Naty Vein system in that they are oxidized, near-surface deposits and have potential for definition of high-quality silver mineralization that may be amenable to low cost, open cut mining techniques.
6 Mt reported above 300 meters from surface signifies the continuation of open cut mining for decades to come.
Some features of these active new fields created the conditions where unionisation of the mines would not come easily; features such as a youthful workforce, most of whom had not worked in the mining industry before, and the unskilled nature of the predominant open cut mining which was occurring on the fields.
The Bickham Coal-mine Action Group's submission expressed a strong concern about the 'possible adverse impacts of open cut mining on the Pages River and the surrounding aquifer' (NSW DMR 2004: 16).
Open cut mining techniques have been described; the underground mines are advance or retreat longwalls with face lengths of 50-80 m, with a low level of mechanisation.