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Boart
| Diamond Glossary (алмазы и бриллианты - глоссарий терминологии) |
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Bort, английский
- The name given to a long fishing-line in the shetland isles.
- Originally the term was used as a name for all crystalline diamonds not usable as gems; later it was used to designate those diamonds not usable as gems or toolstones. currently the term commonly is applied to low-grade industrials suitable only for use in a fragmented form. see fragmented bort. also sometimes spelled boart, boartz, boort, borts, bortz, bowr.
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Boartz, английский
Borehole survey, английский
- The process of determining the course of, and the target point reached by, a borehole, using one of several different azimuth and dip-recording apparatuses small enough to be lowered into a borehole ; also, the record of the information thereby obtained. also called drill-hole survey.
- The process of determining the mineralogical, structural, or physical characteristics of the formations penetrated by a borehole using electrical logging apparatus small enough to be lowered into a borehole; also, the record of the information thereby obtained.
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