Vein and/or Peat (depending on reference, peat is the beginning form of coal).
scuttle
Coal that is still in the ground is referred to as coal seam or coal deposit.
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The deepest coal mine in the world is in Ukraine at a depth of around 3,500 feet.
Hoarfrost is another name for frost. It is a deposit of ice crystals that form on objects when the temperature drops below freezing and atmospheric moisture condenses directly on surfaces.
Another name for anthracite coal is hard coal.
Bituminous coal, or soft coal
Anthracite coal.
scuttle
Sediment.
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Coal that is still in the ground is referred to as coal seam or coal deposit.
Another name for coal is "black gold." This nickname reflects its value as a source of energy and its dark color.
Other names for coal include anthracite, bituminous coal, lignite, and thermal coal.
A lump of coal is also known as a coal nugget or coal chunk.
dirt
Coal. Carbonado