TYPES OF COAL AND USES

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  1. Practical EngineerSeptember 20, 2016 at 9:45 AM

    We know that the Gold is one of the costliest metals in our daily life. We often call it as “Black gold”. We use coal most in our daily life. Did you know how and when this coal formed.
    I am here to make you learn, don'y worry about answer.

    Answer link: http://howwhywhat.net/how-coal-formed/

    ReplyDelete

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