Communication Methods for Doggers and Riggers

Common Communication Methods

Two-way radio

Primary method for long-distance or obstructed communication must be tested before use and kept on a dedicated channel

Radio directions for crane operators

• Doggers/riggers must give clear, concise verbal signals when directing crane movements. 
• Effective communication ensures safe and precise handling of loads.

The following are the standard directions for crane operators from doggers / riggers: 

Hook movement - 
‘Hook up’ and ‘Hook down’ or
‘Hoist up’ and ‘Hoist down’

Boom movement - 
‘Boom up’ and ‘Boom down’ or
‘Boom extend’ and ‘Boom retract’

Slewing -
‘Slew left’ and ‘Slew right’
Directions are given from the crane operator perspective.

OK to raise - ‘All clear’

Stop motion or Do not move - ‘Stop, Stop.’ 

Speak clearly and say the name of the part of the crane to be moved first - then the direction of movement. 

Hand Signals

Hand signals may be used when the dogger/rigger and crane operator have a clear, uninterrupted view of each other. 

This method is especially effective in situations where verbal communication is impractical due to noise or distance, but visual contact is maintained.

Hand and Whistle signals

Whistle signals

• Used to allow hands free communication. 
• Check to see if the local site requirements allow whistles to be used.
• Must follow standardized signal patterns understood by all crew members

These methods ensure that crane movements are directed safely even when visual or verbal cues are not possible.

Each Underground mine may have different Cap Lamp signals to communicate crane or other lifting mechanism movement. The signals and method of communication need to be agreed and confirmed between the dogger/rigger and crane operator before commencing work