opencut


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opencut

[′ō·p·ən¦kət]
(civil engineering)
An open trench, such as across a hill.
(mining engineering)
To drive headings out, or to commence working in the coal after sinking the shafts.
To commence longwall working.
To increase the size of a shaft when it intersects a drift.
References in periodicals archive ?
At the same time a few opencuts and at least two more shafts existed as well, and one of the shafts, the Valencia, penetrated a large outcropping ore mass to a depth of about 7 meters.
Opencut Coal Industry Total Assets and Currency Fund, 2003-2008
The opencut was cleared of debris and untouched in-place vein material was exposed.
Mr Bowen commented that: "The focus is on profit, not revenue, and targets a reduction in Macmahon's exposure to opencut mining which has insufficient returns and high capital expenditure requirements.
A scoping study carried out by Geo-Eng International has indicated that a 9 Mt/y opencut mine at Phulbari would be economically viable.
During the seven years that the Kintore Opencut was worked, the list of species from Australia's famous Broken Hill deposit and the knowledge of the Broken Hill orebody were greatly expanded.
Mapping is concentrating northeast of the existing opencut on geophysical anomalies identified by Kennecott's 1995-1996 field program.
Burton has about 12 years of opencut reserves but mine life could be doubled if the underground resource were to be developed (MM, December 1998, pp.
Western Mining Corporation (WMC) commenced a small opencut on the deposit in 1990.
The opencut ore reserve statement provides for significant additional production from Molyhil, while the process improvements demonstrate that production costs will be very low, particularly in the initial couple of years.
Fimiston reports: "The inferred opencut resources in this province are in the billions of tonnes of vanadium ore.
5] reflects the delineation of a very large, low-grade, low strip ratio deposit (Central Lode) to the south of the existing South Cornwall opencut operations (160 Mt at 214 g/t [Ta.