chain saw cherry picker danger ear muffs extension Harness height looking down lopping men men at work noise reduction Noisy pruning raised platform safety safety harness tall tall tree tree up high workmen helmet tree loppers tree lopping work professional accessories alloy Assembly auto automatic transmission automobile bearing car carving connector control crank crankshaft drive energy engine engineering garage gear gearbox gearwheel generator hose industrial iron machine material metal metallic motor muff parts pimp piston precision pressure repair ride shaft shiny spare teamwork toned transmission vehicle workshop arboriculturist arborist ascended Australia balancing belt chainsaw climber climbing cutting dangerous descending ear-muffs expertise high lines lop man-at-work noise-reduction removal remove removed risk risky ropes safety-glasses safety-harness sawing secured suspended suspension tall-tree tree-lopper tree-lopping tree-management tree-surgeon trees up-high workman chain-saw cover covered covering dangers ear-protection equipment feeding grinder helmeted helmets high-pressure improvement machinery maintenance men-at-work outdoor-power-equipment power-equipment protection protective-clothing protective-gear pushing risks safety-colours spray stumpgrinder sunlight sunshine tools tree-branches tree-loppers wood-chipper wood-chipping wood-chipping-machine work-clothes workers