Things Need to Know About Coal
https://amtiss.com/wp-content/uploads/2019/08/blog-14-1024x645.jpg 1024 645 piyanieta piyanieta https://secure.gravatar.com/avatar/?s=96&d=mm&r=gThe use of coal as the source of energy began to develop since the European industrial revolution around the 19th century. Coal was used as locomotives and steam engines fuel, making this century the golden age of coal. In Indonesia, coal mines began to operate in Kalimantan in the 18th century. However, the coal mined…
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