1 Safe Operation of Remote Controlled Equipment 2

 
1.3 Retrieval of Stranded Load-Haul-Dump Machines 
 
Retrieval of a stranded LHD should be treated as a non-routine hazardous task. Ensure that 
details of every retrieval are entered in the shift log and audited on an annual (or more frequent) 
basis for opportunities to improve operating and retrieval methods and stope design. At no time 
should workers be allowed to work in unsafe conditions to retrieve a disabled LHD. An LHD 
retrieval requires the combined efforts of maintenance and operational workers and at no time 
should a worker attempt to retrieve the LHD on his own. Effective retrieval procedures usually 
involve the use of a second remote-control LHD, equal to or greater in size than the stranded

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22 Workplace Safety North
unit, which can be safely 
maneuvered to place some sort of 
towing device on the disabled unit 
to pull it to a safe location. This 
may also require the releasing of 
automatic brakes on the disabled 
machine. Recovery procedures 
must be tested and practiced in a 
safe location. 
 
 
2.0 Drills and Bolters 
This class of equipment includes 
muck conditioners (block holer), in
-the-hole drills, long-hole drills and 
bolters. 
 
2.1 Machine Designs 
 
Drills can be equipped with remote controls. The intent is to keep the operator a safe distance 
away from rotating equipment and noise, in a position to observe the drilling process. Bolters 
and block holer vehicles incorporate remote controls so the operator may work from a position 
under properly supported ground. 
Drills generally have a console-type remote control which may allow an operator to approach 
the machine while it is working. Section 185 of Regulation 854 specifically requires guarding 
which keeps the operator from coming in contact with any moving part of the machine. The 
installation of a fail-safe mechanism is recommended, with guards which automatically stop all 
machine movement if a guard is opened or removed. 
At times, a mine may use a drill on remote control to drill into rock which has been previously 
drilled and blasted and may contain unfired explosives. This should be considered a non-routine 
hazardous task and a risk assessment should be completed.