Answer | Crossword Clue |
---|---|
BORER | Drill for penetrating rock |
corers | device having a hollow cylindrical drill or tube, used for taking samples of earth, rock, etc., from below the surface of the ground or ocean bottom |
corer | device having a hollow cylindrical drill or tube, used for taking samples of earth, rock, etc., from below the surface of the ground or ocean bottom |
JOHNHAMMER | Rock drill, formally |
TREPAN | Rock-boring drill |
jackhammers | JACKHAMMER, a handheld compressed air rock-drill |
jackhammer | a handheld compressed air rock-drill / to hammer with a jackhammer |