Ключевые слова: black, black gold, coal, coal pile, coal structure, combustible, contamination, dark, dust filter, dust mask, energy, energy storage, extraction, filter, flash, flashlight, fossil, fossil fuel, fuel, gas mask, gloves, glow, hard, hazard, health and safety, helmet, industrial, industry, lamp, light, lump, mask with filter, mine, mineral, mining, night, pneumoconiosis, pollution, potential, protective helmet, raw material, rescue, safety, shale, shines, solid fuel, stone, unclean, underground, wealth,