export best quality bituminous coal origin of iran
Iran, possess some of the richest mines of gilsonite and in the recent years Iran has become a major exporter of gilsonite(Natural Asphalt) to India, China and many other countries
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Keywords
bituminous coal
gilsonite
natural bitumen
asphaltum
asphaltite
mineral bitumen
mineral gilsinite
gilsonite powder
uintahite