L. Vermeulen

Effects of lifter bars on the motion of en-masse grinding media in milling

L. Vermeulen, D. D. Howat, 1988 .

The lifting action of lifter bars in rotary mills

L. A. Vermeulen, L. Vermeulen, 1985 .

Theories of ball wear and the results of a marked-ball test in ball milling

D. D. Howat, L. A. Vermeulen, C. L. M. Gough, 1983 .