Auction Morabisi Columbite-Tantalite Area October 15th 2001 Petroleum Division Web Page Geological Services Division Web Page The Guyana Geology and Mines Commission (GGMC) was created in 1979 from the Department of Geological Surveys and Mines which itself was the successor to the Geological Survey of British Guiana. Currently GGMC is divided into the following divisions: Geological Services ...