Mining. An exploratory pit excavated in order to prospect for mineral deposits. Now rare.
The name given in some colliery districts to each cutting or excavation in the direction of the working in the method called ‘board-and-pillar’…
Mining. An exploratory pit excavated in order to prospect for mineral deposits; = hatch, n.1 6. rare.
An excavation made in removing the ‘gouge’, etc.