Ключевые слова: coal, construction, dirt, dust, earthmoving, engineering, environmental impact, equipment, equipment operator, excavation, extraction, geological, gravel, ground, heavy equipment, heavy machinery, industrial, industry, labor, landscape, machinery, materials, mineral resources, minerals, mining, mining activities, mountains, natural resources, open pit, operations, process, production, quarry, resource management, rocks, rocky, rugged, safety, site development, stones, terrain, terrain management, trucks, worksite,