nip-out
Noun
Meaning
nip-out (plural nip-outs)
(mining) The situation where the roof and thill approach each other, diminishing the usual thickness of the coal seam or extinguishing it completely.
Alternative names
nip out
Noun
nip-out (plural nip-outs)
(mining) The situation where the roof and thill approach each other, diminishing the usual thickness of the coal seam or extinguishing it completely.
nip out