image tag: drill cores, image quantity: 4

4320x3240px

mining, drill cores, boxes, stacked, mine, historically, removal
2304x3456px

bits, bright, concrete, core, drills, masonry, metal
3072x2304px

abrasive, carbide, ceramics, concrete, core, cutters, diamond
3072x2304px

abrasive, carbide, ceramics, concrete, core, cutters, diamond