Super Porphyry 2003-04

Underground in the Grasberg / Ertsberg skarns - Left: Herry Susanto of the Freeport Underground Geology group (second from right) with 'Budi' Boedijono (on the right) points out aspects of the mineralisation to Peter Pelly (BHP Billiton - South Africa) and other members of the tour group in the Kucing Liar deposit adjacent to the Grasberg Igneous Complex. Right: Looking at the geological/mining plan in the DOZ skarn adjacent to the Ertsberg Intrusive prior to inspecting the ore/geology at draw points and in drives. The underground visit was followed by three presentations to the PT Freeport Indonesia geological staff by tour group members on copper-gold systems elsewhere in the world, before being driven back to Timika in the lowlands as the Freeport organisation proceeded smoothly to plan. Photographs by Mike Porter