| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Inch pennyweights | Mining | 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 base-metal mining, the equivalent measurement is the assay-foot or similar convenient combination across the exposed lode. Abbrev., in.dwt. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
