Ключевые слова: altitude, arborist, chain saw, chainsaw, cut, danger, dangerous, dry tree, equipment, fear, felling, firewood, forest, goal, hard work, headgear, height, industry, job, labor, labour, lift, linden, lumberjack, maintenance, man, men at work, nature, occupation, professional, pruning, risk, risk to life, roofs, safety, saw, service, timber, timbering, tool, town, tree, tree branch, tree service, trim, trimming, truck, wood, work, worker,