Columbine mine World premiere of opera about last labor battle at Columbine Mine in 1929 near Erie, Colorado by Mary Davis and Joanna Sampson. Post Ja 19, 1973 p.40 Opera based on Columbine coal mine disaster to be presented by Boulder Civic Opera - written by Joanna Sampson and Mary Davis. RMIV Startime Ap 1, 1973 p.8,lo opera "Columbine" by 2 Boulder women tells story of mine and the FWW. Post Ap 6, 1973 p.39 Good review of "Columbine" by Boulder Civic Opera at Centaurus High School. Post Ap 13, 1973 p.44 0
