Ключевые слова: activity, background, big, building, business, caterpilar, close, concept, concepts, construction, digger, duty, earth, earthmover, equipment, excavation, fork, fork hoist, fork truck, forklift, forklift truck, heavy, industrial, industry, lift truck, loader, loading, machine, machinery, mine, mining, moving, parts, power, reliable, tracks, tractor, transportation, truck, up, vehicle,