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Local Anthracite Coal Dryer Machine Pdf In Iraq

Dnredu0045 72017 page 1 energy producing systems fossil fuels introduction fossil fuels have played a cri˛cal role in the development of our modern societyprior to the start of the industrial age 200 to 300 years ago we met the vast majority of our energy needs with renewable energy resources such as wood for heat watermills for grinding crops or wind to propel sailing vessels.

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