"Drill hole" Quotes from Famous Books
 ... hibernating bats of this species frequently are found there, usually as solitary individuals either in drill holes or clinging to the walls of the quarries; occasionally, however, two or three bats have been found together in a single drill hole. ...
— An Annotated Checklist of Nebraskan Bats • Olin L. Webb
... and such abandoned, mine cannot be explored, or when same contains fire-damp, or water which may inundate such working place, the mine-foreman shall not permit such working place to be advanced until a drill hole has been extended not less than twelve feet in the center of such working place, and a flank hole not less than twelve feet extended on each rib, starting at the working place after taking out each cut or crossing. ...
— Mining Laws of Ohio, 1921 • Anonymous
... particularly at the change of a "shift," the men who have to remove the broken material may in so doing explode the missed charge. Or, more inexcusable still, men will often be so foolish as to try to clear out the drill hole and remove the missed cartridge. When a charge is known to have missed all that is necessary to do in order to discharge it safely is to remove a few inches of "tamping" from the top of the drill hole, place in the bore a plug of dynamite with ...
— Getting Gold • J. C. F. Johnson |
