Huaguoshu/Yichang Mine

BRITISH SULPHUR CORPORATION, WORLD SURVEY OF PHOSPHATEDEPOSITS, FIFTH ED., 1987, 274 PP., P 184.E&MJ MINING ACTIVITY DIGEST, VOL. 21, NO. 3, MARCH 1993,PAGE 4.IDRB, STAFF APPRAISAL REPORT, CHINA; HUBEI PHOSPHATE PROJECT4/25/89, P. 51, ANN.4.4.ENGINEERING & MINING JOURNAL. A NEW BENEFICIATION PLANTUSING HEAVY-MEDIA PROCESSES HAD GONE ON STREAM....:V. 194, NO.3, MARCH, 1993, PAGE 14.US-CHINA BUSINESS COUNCIL. CHINA'S METALS AND MINERALS, ACOMPREHENSIVE GUIDE. US-CHINA BUSINESS COUNCIL,WASHINGTON, D.C., 1988, 128 PP.