kojak79 _____________ It's a FACT that for July to September, the average waste percentage is 70%. These numbers come from BK Interim Financial Reports filed. Add up the monies paid to the Trucking Company then divide that number into the shipping price per ton. Then add up the total revenue and divide that number with the purchase order - sale price. What you'll have is the total "raw tons" and total "clean tons" of coal.