Jahan Arta · ImpressumQuality, Quantity, Cost benefit, Efficient and Reliable Supply of Natural Bitumen(''Gilsonite- Like'') Processed Lumps(Rocks) and Grinned, Micronized Powder for a wide range of applications. · Long DescriptionTechnically Engineered and Highly Efficient Mining, Primary Processing(Physical Inspection, Sorting, Separating, Cleaning, Drying and Testing)Crushing, Grinding and Micronization, Packaging and Supply of Natural Bitumen(''Gilsonite- Like'') Processed Lumps(Rocks) andCrushed, Grinded and Micronized Powder in Accurate Ranges of Ash Percentage(Ash