Ключевые слова: agriculture, arm, beam, branches, carpenter, carpentry, chain, chainsaw, circular, cut, danger, dangerous, environment, environmental, equipment, falling, firewood, forest, gasoline, glove, hand, hardhat, helmet, human, industry, job, log, lumber, lumberjack, machine, petrol, protective, pruning, safety, saw, sawing, sharp, timber, tool, tree, trim, trimming, winter, wood, work, worker,