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Depends on what you want to do with them.

Coal can be heated in coke ovens to liberate various gases that can be used industrially. e.g. sulphur dioxide, methane etx, thre solid product is coke and impure form oc carbon, which can be used for heating.

Charcoal is baked wood. again an impure form of carbon, and was used , historically, to smelt metal ores to release the metals. Artistically, it is a very good material for charcoal sketching, or 'ground dimensions for oil painting.

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lenpollock

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7mo ago

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