Permeability studies on the 100 series wells, which had been hydraulically and then explosively fractured, have shown much greater communication between wells and much greater permeability than had been present in the wells on the existing site during the 1978 extraction trials. Well No. 301, which is the central well in the explosive underreaming series, was cleaned out. Two wells were drilled and cored nearby. Extensive fracturing due to the use of explosives in Well No. 301 was evident in the well located 15 feet from the site of the explosive treatment. Communication between these wells is also evident. A downhole methane burner of Tejas Petroleum Engineers was successfully tested under realistic operating conditions in an existing well. Other preparations for the planned extraction trial are continuing.