Ключевые слова: aggregates, belts, business, classification, classifier, construction, conveyors, crushing, day, desert, distribution, exploitation, extraction, gravel, industrial, landscape, limestone, machinery, mining, mortar, mountain, nature, nobody, outdoor industry, piles, plant, quarry, quartz, removal, riddles, screening, section, silica, silicon, spain, stone, sunny, trade, transportation, vibrating screens, yellow,