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Citation: Jp. Beukes et Rn. Guest, Cr(VI) generation during milling, MINER ENG, 14(4), 2001, pp. 423-426

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Citation: Jp. Beukes et al., Nickel retention by goethite and hematite, MINER ENG, 13(14-15), 2000, pp. 1573-1579

Authors: Beukes, JP Pienaar, JJ Lachmann, G

Citation: Jp. Beukes et al., The reduction of hexavalent chromium by sulphite in wastewater - An explanation of the observed reactivity pattern, WATER SA, 26(3), 2000, pp. 393-395

Authors: Beukes, JP Pienaar, JJ Lachmann, G Giesekke, EW

Citation: Jp. Beukes et al., The reduction of hexavalent chromium by sulphite in wastewater, WATER SA, 25(3), 1999, pp. 363-370