a. The taking of small pieces of ore or coal, with a small pick, along a line or at random, across the width of a face exposure. The samples are usually taken daily and often confined to exploration. Reasonable care is taken to chip a weight of material that corresponds to the length of sample line. See also: bulk sample
b. A variant of channel sampling, in which, owing to extreme hardness of rock, shape of deposit, or other working difficulty, a true channel sample cannot be taken. Often used in preliminary prospecting. Pryor, 3
Source:
Dictionary of Mining, Mineral, and Related Terms












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