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inch pennyweights
In valuation of gold lodes, the product of the width of the exposure of ore, measured normal to the containing host rock, and the assay value in pennyweights of a true sample of the ore, cut evenly along the measured line. In evaluation of ore tonnages in basemetal mining, the equivalent measurement is the assay-foot or similar convenient combination across the exposed lode. Abbrev., in. dwt.
- 词性: noun
- 行业/领域: 采矿
- 类别 一般矿业; Mineral mining
- Government Agency: USBM
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创建者
- ed.young
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(Milwaukee, United States)