A simpler and less expensive drilling method than core drilling is reverse circulation (RC), where a double-walled drill pipe is drilled into the ground and cuttings from the drill are forced by air up the inner pipe into a bin.
A simpler and less expensive drilling method than core drilling is reverse circulation (RC), where a double-walled drill pipe is drilled into the ground and cuttings from the drill are forced by air up the inner pipe into a bin.
