high-grade


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high-grade

[′hī ‚grād]
(mining engineering)
To steal or pilfer ore or gold from a mine or miner.
References in periodicals archive ?
I have to remain skeptical about anything less than esophagectomy for high-grade dysplasia and intramucosal cancers.
A priority in 2002 will be to establish underground access to facilitate more exploration of the high-grade zone at depth, with the goal of a more substantial increase in the reserves and resources of this high-grade mineralization.
Facial nerve palsy is observed in 17% of patients with intermediate- or high-grade disease.
Bongara (Peru): Past drilling, though widely spaced, suggests the potential for over 20 million tonnes of high-grade zinc mineralization.
The Zamora gold project is an epithermal gold district with excellent surface indications for a productive high-grade gold system," states Tom Shrake, President and CEO.
In particular, diamond drill hole D05-430 encountered several high-grade mineralized structures including a downhole interval averaging 33.
In 2002, Apex Silver completed a Phase 1 exploration program and discovered several additional zones of silver-zinc-lead mineralization within the vein system at the Pulacayo Mine that are both broad and high-grade.
The high-grade gold mineralization at Fenelon occurs in silicified, subparallel, east-southeast-trending, near-vertical shear zones, which range in thickness from approximately one-half metre to six metres.
Two drill rigs are operating at the Debarwa high-grade copper-gold volcanogenic massive sulphide (VMS) area and two are operating at the Adi Nefas high-grade zinc-copper-gold VMS.
All four holes drilled by Redstar intersected wide zones of breccia with anomalous to high-grade gold mineralization.

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