USGS BUMBLE BEE QUADHARRER C M RECON OF IRON RESOURCES USBM IC 8236 1964 P 108ADMR ECLIPSE GROUP FILEADMR THUNDERBOLT FILELINDGREN W ORE DEPOSITS OF THE JEROME AND BRADSHAW MTS QUADSUSGS BULL 782 1926 PGUITERAS J R GOLD MINING AND MILLING IN THE BLACK CANYONAREA USBM IC 6905 1936 P 21ARIZONA MINING JOURNAL SEPT 1917 P 13