You asked: Why is coal salty?

Is there salt in coal?

The salinity in coal mine environments is from the geogenic salt accumulations and weathering of spoils upon surface exposure. The salts are mainly sulfates and chlorides of calcium, magnesium and sodium.

Does coal mining use a lot of water?

Coal mining and transport

According to the US Department of Energy, total water used for coal mining in the United States (including water use for coal washing and cooling of drilling equipment) ranges from 70 million to 260 million gallons a day.

How does coal mining use water?

Mining uses water primarily for mineral processing, dust suppression, slurry transport and employees’ needs. In most mining operations, water is sought from groundwater, streams, rivers and lakes, or through commercial water service suppliers.

Are salt mines safe?

Salt mines are among the safest of mines. They are also the most comfortable to work in. While mine temperature varies with depth, the average temperature remains about 70° F year round. Salt may appear in veins, as does coal.

Why is there water in a mine?

Origin. Although all water that enters pit workings originates from atmospheric precipitation, the miner distinguishes between surface water and groundwater. … During heavy rain, water seeps into the earth and forms ground water when it meets layers of impervious rock.

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Does copper mining use a lot of water?

A little more than 100,000 gallons of water per ton of copper was used in the production of copper from domestic ores. Of this amount about 70,000 gallons per ton was used in mining and concentrating the ore, and about 30,000 gallons per ton was used to reduce the concentrate to refined copper.

Does burning coal produce water?

When burned, the carbon is converted to carbon dioxide and the hydrogen to water.