Inner Mongolia Polymetallic Mine, Cross-section: 4.2×4m. Tunneling jumbo equipped with Woserld 18KW hydraulic rock drill. Rock hardness: F8-10, hole depth: 3.8m, average time per hole: 1 minute.
Inner Mongolia Polymetallic Mine, Cross-section: 4.2×4m. Tunneling jumbo equipped with Woserld 18KW hydraulic rock drill. Rock hardness: F8-10, hole depth: 3.8m, average time per hole: 1 minute.