1. Mineral sector technologies: policy implications for developing countries;Andrews;Natural Resources Forum,1992
2. Brewis, T. (1995) Metal extraction by bacterial oxidation. Mining Magazine October, 197-207.
3. Innovate or perish;Brinsden;AusIMM Bulletin,1992
4. Chadwick, J. (1992) Mt Isa - processing and metallurgy. Mining Magazine July, 24-32.