Ключевые слова: belt, cement, concrete, construction, convey, conveyor, dust, earth, equipment, excavation, factory, geology, granite, gravel, gray, heap, heaps, heavy, industrial, industry, machinery, manufacturing, material, mine, mineral, monochrome, natural, operation, pile, piles, pit, plant, process, processing, quarry, resource, ridged, rock, sand, site, steel, stock, stone, structures, sustainable, toned, tracks, transport, tyre, vertical,