Ключевые слова: biggest, city, cone, congress, day, deposit, depth, development, diamond, digging, earth, ecology, extract, extraction, field, geology, ground, industry, jewellery, kimberlite, lake, land, landscape, large, largest, mine, mineral, mirny, north, old, opening, ore, outdoor, peace, pipe, pit, quarry, rich, russia, russian, siberia, sky, spiral, spring, stone, tube, unique, valuable, world, yakutia,