Ключевые слова: clouds, coal, construction, dirt, dump, earth, energy, environment, environmental, equipment, excavation, extraction, heavy, hills, impact, industrial, industry, infrastructure, landscape, loading, machinery, machines, minerals, miners, mining, moving, operations, pile, production, productivity, quarry, quarrying, site, smoke, steel, stockpile, teamwork, terrain, transportation, truck, trucks, vehicles, work,