The MacLean Advantage:

Rugged and reliable, the MacLean BH2 and BH3 Blockholers are designed to eliminate ore flow blockages and release trapped reserves in draw points and beyond draw point brows without endangering mine workers. Integrated Radio-Remote Control (RRC) allows tramming, drilling and blasting operations to be conducted from safe distances.


  • Oversize is fragmented at source, minimizing draw point damage and ore flow
  • Productivity improvements by elimination of non-productive boulder re-handling
  • Boom configuration enables multiple boulders to be drilled from one set up
  • With RRC system, can drill and charge hang ups and operator never exposed to the risks of rock fall
  • Provides auxiliary drilling capability for service holes and rock bolting


  • Fully self-contained drilling system; no air or water services necessary
  • Optional radio and video system designed for underground environment
  • Hydraulic rock drilling
  • Heavy duty frame construction
  • Four wheel drive carrier
  • Reliable, proven power train components


  • Any underground mine where bulk mining activities generate boulders too large to move, carry, drop through grizzlies or dump into crushers
  • Most effective where multiple draw points allow ore extraction to continue while block hole operations are conducted


Length 8.68 m (342”)  10.9 m (432”)
Width 1.82 m (72”)  2.43 m (92”)
Height 2.29 m (90”)  2.59 m (100”)
Turning radius (inside) 3.56 m (140”)  3.18 m (125”)
Turning radius (outside) 5.71 m (225”)  5.84 m (230”)
Shipping weight 12,250 kg (27,000 lbs)  12,700 kg (28,000 lbs)

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