| Answer | Crossword Clue |
|---|---|
| bores | sink a mine shaft or well |
| bore | sink a mine shaft or well |
| upcast | shaft or passage up which air passes, as from a mine |
| brattices | A partition or shaft lining in a coal mine, typically made of wood or heavy cloth |
| brattice | A partition or shaft lining in a coal mine, typically made of wood or heavy cloth |
| sinking | dig or bore (a well or shaft) in the earth excavate |
| sinks | Excavate (a well) or bore (a shaft) more or less vertically downward |
