Rock-breaking definition
Rock-breaking means the removal of boulders or bedrock from land by drilling, percussive breaking (not hammering), or splitting, but excluding blasting;
Rock-breaking means a method used in construction to demolish concrete structures and rock by using either a jackhammer or a percussion hammer which has been fitted to an excavator.
Rock-breaking means the removal of boulders or bedrock from land by drilling, blasting, percussive breaking or splitting.