COAL SPECIFICATIONS Coal delivered from the export terminals, Richards Bay in South Africa, will normally be a typical RB1 and RB3 quality. Contracts can be traded on fixed price or on an indexlinked basis. (API4) Typical Export Specificaons RB1 RB3 CALORIFIC VALUE BASIS 6,000 kcal/kg NCV 5,500 kcal/kg NCV CALORIFIC VALUE MIN 5,850 kcal/kg NCV