groove sample

groove sample

[′grüv ‚sam·pəl]
(mining engineering)
A sample of coal or ore obtained by cutting appropriate grooves along or across the road exposures. Also known as channel sample.
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References in periodicals archive ?
14: a missing groove sample, simulating a broken groover tooth, and an overcrush sample with crush roughly 50% of the peak height.
146) Under the observability test, a looped drum groove sample would receive more quantitative importance than a non-looped drum sample.
Tongue and groove samples along with different styles of mouldings are displayed on the wall near one of the entrances.