ANON MINING GRAPHITE IN SRI LANKA ;FROM SMMDC FILESBASTIN THE GRAPHITE OF CEYLON ECONOMIC GEOLOGY VOL 7 #5AUGUST 1912.JAYATILEKE KOJ NATURAL GRAPHITE WITH SPECIAL REFERNCE TOTHE GEOLOGY MINING AND PROCESSING AT BAGALA MINESSRI LANKA TECHNICAL PAPER PRESENTED IN YUGOSLAVIA1979.KENDALL HM ET AL INTRODUCTION TO PHYSICAL GEOGRAPHY SECONDEDITION 1974.SMMDC COMPANY PRODUCT BROCHURE NO DATEIFS FINANCIAL TABLES