Positive-circulation pneumatic DTH hammer drilling reached 2,004.42 m with the CMD100 — a national record, 387 h pure drilling, 192 m per 8-hour shift.
Surface CBM drainage horizontal well: CMD100 drilled 2,010 m TD, 1,060 m vertical, 950 m lateral, 88.42 deg, 311 mm to 216 mm hole, 127 mm oil-based rods.
CMD100 air DTH rescue supply hole: 311 mm to 11.18 m with 245 mm surface casing, then 215.9 mm to 117 m with 139.7 mm casing, drilled through in 8 hours.