Reference | {Deposit:: ENGINEERING AND MINING JOURNAL NOV. 1973 PP.91-108}{Deposit:: ISOKANGAS, PAULI. PAPER ON THE FINNISH MINING INDUSTRY 1975}{Deposit:: MINING MAGAZINE DEC. 1972 PP.526-539}{Deposit:: MINING MAGAZINE DEC. 1978 PP.565-575}{Deposit:: WORLD MINING MARCH 1978 PP.37-49} |