This report describes activities for the fifth quarter of work performed under this agreement. A third round of atmospheric testing was conducted as scheduled on December 9 through December 12, 2003. The test results demonstrated a much-improved rate of carbon dissolution with gas yields close to thermodynamic equilibrium at nearly doubled feed rates of September testing and a commercially viable feed and oxygen injection technique. Additional super-atmospheric testing to perform the last task in the MEFOS experimental program is scheduled for the week of August 2004.