Ключевые слова: agricultural, bale, calorific value, chop, effectively, energy, engine, equipment, fireplace, firewood, forest, forestry, furnace, gear, heat, heating, hydraulic, hydraulically, machine, pile, power, raw material, renewably, saw, splintered, splinters, splitter, stack, structure, tractor, trunk, unit, warms, wood, wood chips, wood hacker, wood pile, wood trunks,