Z. Hofirek

The chemistry of the nickel-copper matte leach and its application to process control and optimisation

Z. Hofirek, D.G.E. Kerfoot, D. Kerfoot, 1992 .

Pressure leach capacity expansion using oxygen-enriched air at RBMR (Pty) Ltd

Z. Hofirek, P. Nofal, 1995 .

PRODUCTION OF HIGH QUALITY ELECTROWON NICKEL AT RUSTENBURG BASE METALS REFINERS (PTY.) LTD.

Z. Hofirek, P. Halton, P. Halton, 1990 .