M'Rata

1978 ENGINEERING AND MINING JOURNAL INTERNATIONAL DIRECTORYOF MINING AND MINERAL PROCESSING OPERATIONS, MCGRAW HILL,1978, P. 353.MINING MAGAZINE, MINING ACTIVITY IN THE WESTERN WORLD, JAN.1979, P. 58.ENGINEERING AND MINING JOURNAL, 1979 SURVEY OF MINE ANDPLANT EXPANSION, JAN. 1979, P. 110.DE KUN, NICOLAS, THE MINERAL RESOURCES OF AFRICA, ELSEVIERPUBLISHING COMPANY, 1965, P. 564, 567-570.NIGHTENGALE, WILLIAM G., MINING INTERNATIONAL YEARBOOK 1978,THE FINANCIAL TIMES LIMITED, V. 91, 1978, P. 182.A WORLD SURVEY OF PHOSPHATE DEPOSITS, THE BRITISH SULPHURCORPORATION, LIMITED, 1964, P. 58-67.CONFIDENTIAL TRIP REPORT,1976.DMA SERIES 1501 MAP, SHEET NI 32-6, SCALE 1:250,000.POWER, TIM, "TUNISIA; DEVELOPING DOWNSTREAM INDUSTRIES",INDUSTRIAL MINERALS, JULY 1986, PP. 20-27.BRITISH SULPHUR CORPORATION, WORLD SURVEY OF PHOSPHATEDEPOSIT, FIFTH ED., 1987, P.111.U.S. GEOLOGICAL SURVEY. MRDS, MINERAL RESOURCE DATA SYSTEM.U.S. GEOLOGICAL SURVEY. MAS, MINERALS AVAILABILITY SYSTEM.