Arial view of a large excavator repairing a section of river damaged by a flood waters caused by a tropical cyclone

excavator heavy machinery construction site subcontractor machine operator builder landscaper mining natural resources material property dig dirt dust mud gravel noisey hire equipment hardware industrial commercial pollution council houses metal bucket experienced person bobcat truck delivery rubbish workplace safety protective wear safety wear rock grab claw revetment retaining wall water river erosion control flood control repair cyclone damage boulder retaining wall stone quarry high vis worker relief fund building foreman emergency reventment wall