| Reference | {Deposit:: MINING JOURNAL. NORSK HYDRO TO MINE IRON/PHOSPHATE. MARCH}{Deposit:: 4, 1977, P. 163.}{Deposit:: ENGINEERING AND MINING JOURNAL. EUROPE. JANUARY 1978,}{Deposit:: P. 73.}{Deposit:: MINING MAGAZINE. NORWAY. JANUARY 1979, P. 72.}{Deposit:: CHINA RARE EARTH INFORMATION, NO.37, MAY 1995, PAGE 4.} |