FOR Dr. Douglas Grant (emeritus scientist) Terrain Sciences Division Geological Survey of Canada Please email me privately to discuss ice ring formation theories. Terry W. Colvin <colvint@cc.ims.disa.mil> or <colvint@ncr.disa.mil> Fort Huachuca (Cochise County), Arizona USA "No editor ever likes the way a story tastes unless he pees in it first." -Mark Twain