| Reference | {Deposit:: POPOFF, C.C., 1965, AN EVALUATION OF THE WESTERN PHOSPHATE}{Deposit:: INDUSTRY AND ITS RESOURCES, PART 2, MONTANA, USBM RI 6611,}{Deposit:: P. 112.}{Deposit:: LUFT, STANLEY, 1958, NORTHERN PACIFIC RAILWAY COMPANY,}{Deposit:: PROPERTIES AND INDUSTRIAL DEVELOPMENT DEPARTMENT, PHOSPHATE}{Deposit:: REPORT, P. 68.}{Deposit:: SWANSON, R.W., 1970, MINERAL RESOURCES IN PERMIAN ROCKS OF}{Deposit:: SW MONTANA; USGS PROF PAPER 313-E, P. 725.}{Deposit:: MRB 113, P. 84.} |