Perak State

LEOW YAU SIP, HO CHEONG FOOK, LEONG WAI NYLEAN AND REDZWANSUMUN, LATEST TRENDS IN GRAVEL PUMP (PALONG) MINING INMALAYSIA, 4TH TECHNICAL CONFERENCE ON TIN, KUALA LUMPUR,MALAYSIA, 1974.HEW SEE TONG, INVESTMENT IN, AND OPERATION OF A GRAVEL PUMPMINE IN TYPICAL DREDGED OUT LAND TODAY, 5TH WORLD CON-FERENCE ON TIN, OCTOBER, 1981.SHEAHAN, P.M., A SURVEY OF MALAYAN PRACTICE IN THE RECOVERYOF CASSITERITE AND ASSOCIATED MINERALS, THE 8TH IMM MININGAND METALLURGICAL CONGRESS, 1967, PAPER NO. 159.PAKIANATHAN, S., & SIMPSON, P., OPENCAST MINING OF ALLUVIALTIN ORE DEPOSITS IN MALAYSIA, VOLUME 6 OF THE PROCEEDINGSOF THE IMM, 1967, PAPER NO. 86.ENGEL, B.C., TIN PRODUCTION AND INVESTMENT, FIFTH WORLDCONFERENCE ON TIN, KUALA LUMPUR, MALAYSIA, OCTOBER, 1981,PAPER NO. 2.ABDULLAH HASBI BIN HAJI HASSAN, PRIMARY CONCENTRATION OF TINORES AT GRAVEL PUMP MINES, NATIONAL SEMINAR ON THE MININGINDUSTRY, KUALA LUMPUR, AUGUST, 1977, PAPER NO. 1.6.