The Clark MH series drill rig is designed for drilling medium to long holes in underground coal mines for gas drainage and cross measure purposes. The unit incorporates a single drill and feed unit with stabilizing jacks on each corner and two roof jacks for anchoring the machine. The feed bed is able to be raised for drilling at various angles. The drill head is a Clark through chuck to suit AW or AWJ drill rods (43.8mm to ISO3551-1) which is gripped by pneumatic jaws in the chuck. The feed is a single stage hydraulic cylinder with heavy duty chains and a hydraulic rod clamp. The undercarriage is based on the successful Clark secondary support drill rig the AT5000HB. Options are available with various length roof jacks to suit specific roadway heights. Now available with the quieter Clark Owl muffler.

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