Ключевые слова: blasting, cave, cavern, coal, coalmine, diamond, diamonds, digging, donbass, drilling, excavation, explosives, extraction, gem, gemstones, geology, goldmine, hard work, hardhat, helmet, labor, laborer, laborers, laboring, machinery, metal, minecart, miner, mineral, mineralogy, minerals, miners, miners union, ore, pickaxe, pickaxes, prospecting, prospectors, quarry, resources, safety, shaft, shafting, shovel, subterranean, tools, tunnel, underground, ventilation, worker,