The distance between boreholes drilled for exploration or sampling purposes.
With bedded minerals, the holes may be positioned at the intersection points of
coordinates or at the corners of equilateral triangles with sides from 30 to
200 m apart. The spacing is closer with patchy deposits. With metallic ores
following belts across country, the holes are spaced along lines crossing the
orebody in order to yield cross sections of the ore at definite intervals. In
the case of known and semiproved coalfields, boreholes at 1/2- to 1-km
intervals may suffice. Nelson
Source: Dictionary of Mining, Mineral, and Related Terms
Source:
Dictionary of Mining, Mineral, and Related Terms
