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1. Reviews Steel and its heat treatment, by K-E Thelning. 2nd Edition. London, Buterworths, 1984.678 pp. R201,60 (incl. OS1). Reviewer: J.P. Hofman The Southern Queensland Conference 1985. Parkvile (Australia), The Australasian Institute of Mining and Metallurgy, 1986. A$ 15.00. Reviewer: R.B. McGilivray Rock mechanics, by A.R. Jumikis. 2nd edition. Clausthal-Zelerfeld (West Germany), Trans Tech Publications, 1983. US$ 58. Reviewer: R.W.O. Kersten The XVIth International Coloquium on Refractories. Freiburg, West Germany, 1985. DM 80. Reviewer: H.J. S. Kriek Diamond driling handbook, byW.F. Heinz. Johannesburg, South African Driling Association, 1985. 517 pp. R30. Reviewer: S.A.G. Martins Processing and utilization of high sulfur coals, edited by Y.A. Atia. Amsterdam, Elsevier, 1985.788 pp. Oft. 385. Reviewer: L.M. Falcon Weighingand proportioning of bulk solids, by Hendrik Colijn. 2nd edition. Rockport (U.S.A.), Trans Tech Publications, 1983. 398 pp. $60.00. Reviewer: G. Cunningham Investment appraisal and economic evaluation of mining enterprise, by S. von Wahl. Clausthal-Zelerfield (West Germany), Trans Tech Publications, 1986. US$ 40. Flotation of sulphide minerals, edited by K.S. Eric Forssberg. NewYork, Elsevier Science Publishers, 1985. 480 pp. US$1O1.75. Reviewer: T.R. Twidle 5th Meeting of the European Clay Groups (5th Euroc/ay Meeting), Prague, edited by J. Konta. Praha (Prague), Univerzita Karlova, 1985. Reviewer: D. Bibmann 2. Recent publications CSIRO. Research review1982-84: CS/Ra Division of Mineral Engineering. Melbourne, Commonwealth Scientific and Industrial Research Organization, 1985. 77 pp. The world copper market: structure and econometric model, by Gerhard Wagenhals. Berlin, Springer- Verlag, 1984. 202 pp. DM 37,00.Materials data of high-strength aluminium aloysfor durability evaluation of structures, edited by L. Schwarmann. Disseldorf (West Germany), Aluminium- Verlag GmbH, 1985. BRITISH GEOLOGICAL SURVEY. UnitedKingdom mineral statistics 1985, compiled by H.c. Squirel, A. Jones, N.E. Sharp, M. Lowe, and D. Slater. Keyworth (U.K.), the Survey, 1986. 175 pp.3. Mintek reports Report Ml66D The effect of calcining on the recovery of gold in a sand residue. (1st issued Sep. 1984.) Report M168D The treatment of Uitkomst concentrate. (1st issued Oct. 1984; reissued Mar. 1986.) Report M175D Supergene alteration at the Pering zinc-lead deposit: The nature and extent of the oxidation zone. (1st issued Oct. 1984.) Report M176D Bench-scale tests on the extraction of cobalt and nickel from COMAT leach liquors. (1st issued Nov. 1984; reissued Mar. 1986.)Report M241 PLA TO at Mintek. Report M243 The performance and wear characteristics of grinding media as affected by metallurgical and dimensional factors. Project development The Second Project Development Symposium on Planning, Construction and Commissioning will be held in Sydney, Australia, from 7th to 10th October, 1986. Hosted by the Sydney Branch of The Australasian Institute