(EnergyAsia, August 5 2010, Thursday) — Germany’s HMS Bergbau AG and Indonesia’s and P.T. Nusa Alam Lestari (NAL) said they have signed an exclusive marketing cooperation to export high and mid-calorific value coal from Sumatra Island. The companies agreed to extend their long-term and exclusive cooperation to include NAL’s new mine developments in Muara Bungo…