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Diamond core drill
| Diamond Glossary (алмазы и бриллианты - глоссарий терминологии) |
A rotary-type drill machine using equipment and tools designed to recover rock samples in the form of cylindrical cores from rocks penetrated by boreholes. see core drill, diamond drill.
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Cylindrical, английский
Цилиндрический
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Orienting coupling, английский
A rotatable coupling on a thompson retrievable wedge-setting assembly that may be set and locked in a predetermined position in reference to the gravity-control member. this places the deflection wedge so as to direct the branch borehole in the desired course.
Nondiamond core drill, английский
A rotary or percussive-type drill equipped with core-cutting tools or bits the cutting points of which are not inset with diamonds.
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