| Reference | {Deposit:: JONES 1920 USGS BULL 710-A P 1-36}{Deposit:: FORRESTER 1945 USGS OP-FILE MAPS: MAPS OF THE LITTLE PITTSBU}{Deposit:: FORRESTER AND NELSON 1945 USGS OP-FILE REP: PB-ZN DEP PINE C}{Deposit:: FRYKLUND (WITH A SECTION BY WEIS) 1964 USGS PROF PAPER 445}{Deposit:: HERDLICK 1947 USBM REP INV 3999 LITTLE PITTSBURGH PB-ZN MI}{Deposit:: HUNDHAUSEN 1948 USBM INFO CIRC 7428 MIN-MILLG COSTS LITTLE}{Deposit:: METALS SOURCEBOOK 1975 VOL 3 NO 3}{Deposit:: BOB RICE, PERS. COMM., JULY, 1975,(RESERVES UP TO 1975)}{Deposit:: SHANNON 1926 US NATL MUSEUM BULL 131 P 99-100}{Deposit:: UMPLEBY AND JONES 1923 USGS BULL 732 P 84-85, 90-92}{Reserve-Resource:: BOB RICE INT. MINERALS ENG. PERS. COMM., OCT. 10, 1980.}{Reserve-Resource:: MR. RICE OF INT. MINERALS ENG. STATED ON OCT. 10, 1980 THAT}{Reserve-Resource:: ALL KNOWN RESERVES HAVE BEEN DEPLETED. EXPLORATION,}{Reserve-Resource:: HOWEVER, IS ONGOING.} |