Ключевые слова: building material, bulldozer, clay, coal, construction material, digger, digging, earth, earth works, earthmover, excavation, excavator, extracting, extraction, gravel, heavy, helmet, industrial, industry, job, machinery, man, material, men, miner, minerals, mining, mining industry, mirror, occupation, occupational safety, opencast mining, operation, people, pit, production, quarry, safety, sand, side mirror, surface, surface mining, transporter, truck, vest, wing mirror, woman, worker, workers, working,