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The Broken Hill Associated Smelters Proprietary Limited, Port Pirie, S.A Outline of The Lead Refindery Designed and Operated in accordance with the Parkes Process of Lead Refining
Williams, George K., The Broken Hill Associated Smelters Proprietary Limited, Port Pirie, S.A Outline of The Lead Refindery Designed and Operated in accordance with the Parkes Process of Lead Refining (1931), [UMA-ITE-2011008600013]. University of Melbourne Archives, accessed 23/04/2026, https://archives.library.unimelb.edu.au/nodes/view/318780