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old gold mining machinery in france

300MillionYearOld Tooth Wheel Found In Russian Coal ,The Voice of Russia an international Russian broadcasting service reported that since the coal deposits in this region of the country can be dated to 300 million years ago experts are suggesting that the odd piece of metal found in the coal must be that old as well...As a leading global manufacturer of crushing equipment, milling equipment,dressing equipment,drying equipment and briquette equipment etc. we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete plant plan.

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