| Reference | {Deposit:: GREENWOOD, D. A., FLUORSPAR MINING IN THE NORTHERN PENNINES,}{Deposit:: INSTITUTE OF MINING AND METALLURGY, TRANSACTIONS, SECT. B,}{Deposit:: NOV. 1977, P. B181-B189.}{Deposit:: BLUNDEN, J., THE MINERAL RESOURCES OF BRITAIN, A STUDY IN}{Deposit:: EXPLOITATION AND PLANNING, HUTCHISON AND COMPANY, LONDON,}{Deposit:: 1975.}{Deposit:: SPOONER, J., MINING ANNUAL REVIEW, MINING JOURNAL, LONDON,}{Deposit:: JUNE 1978, P. 533.}{Deposit:: STAFF, 1978 ENGINEERING AND MINING JOURNAL INTERNATIONAL}{Deposit:: DIRECTORY OF MINING AND MINERAL PROCESSING OPERATIONS,}{Deposit:: MCGRAW-HILL, NEW YORK, 1978, P. 283.} |