LEMMON DM UNPUBLISHED DATA1962 LEMMON DM AND TWETO OL TUNGSTEN IN THE US USGS MAP MR251943 CALKINS FC AND BUTLER BS USGS PROF PAPER 2011916-1926 USBM MIN RES1944 CRAWFORD AL AND BURANEK AM UTAH UNIV ENG EXP STA BULL241958 SHARP BJ GSA BULL VOL 69 P1415-1430