Virtual Museum Quincy Quarry and Granite Workers
The quarry hand held jackhammer was used in the quarrying operation to drill holes up to 2 inches in diameter for blasting or for splitting large blocks from the stone bed with deep hole wedges and shims. The jackhammer could also be used to hammer in the deep hole wedges. Pneumatic jackhammer and drills donated by James Petersen and Lori Niemi