Ключевые слова: activity, backhoe, belt, brown, bucket, bulk, carbon, coal, coalmine, coalmining, conveyor, digger, dredger, dump, dust, electric, energy, engine, engineering, excavator, extraction, facilities, fuel, garage, giant, ground, heat, huge, industrial, industry, lampang, large, lignite, machine, material, mine, mining, open, pile, pollution, power, site, stack, station, technology, thailand, transportation, truck, view, work,