Hopewell Mine

LISA CAIN, SECRETARY, HOPEWELL LAND CORP./NORANDA GROUP;8/25/87 TELEPHONE CONVERSATION WITH LEE OSMONSON.U.S. BUREAU OF MINES. COMPILATION OF PROPRIETARY, INDIVIDUALCOMPANY, PRODUCTION STATISTICS (FOR THE YEARS 1985 AND1986).PERSONAL COMMUNICATION, LONNIE K. ENGEL, MINE SUPERINTEN-DENT, AND DOUG BLOWS, GEN'L. SUPERINTENDENT, BY M.B.SAWYERAND T.A. DRESCHER, IFOC, MAS, 1/23/85.GENERAL HIGHWAY MAP, HILLSBOROUGH COUNTY, FLORIDA, DEPT.TRANSPORTATION, 1972.NICHOLS AND DOVER QUADRANGLES, FLORIDA, 7 1/2 MINUTE SERIES,U.S.G.S., 1955.WILBURN, DAVID R., HOPEWELL MINE, BUMINES CONFIDENTIALMINERALS AVAILABILITY SYSTEM SUMMARY FILE REPORT, JUNE1980, 20 PP.PERSONAL COMMUNICATION, TONY RUSSO, WORTHINGTON PUMPS, INC.,APRIL, 1985.PERSONAL COMMUNICATION, IRENE SINGLETERRY, HILLSBOROUGHCOUNTY TAX ASSESSOR'S OFFICE (813) 272-1600, APRIL 1985.ZELLARS-WILLIAMS INC.,EVALUATION OF THE PHOSPHATE DEPOSITSOF FLORIDA USING THE MINERALS AVAILABILITY SYSTEM, BUMINESOPEN-FILE REPORT 112-78, NTIS: PB 286 648/AS, 1978,199 PP.FANTEL, R.J., SULLIVAN, D.E., AND PETERSON, G.R., PHOSPHATEROCK AVAILABILITY - DOMESTIC, BUMINES I.C. 8937, 1983,57 PP.