... W. G. (1980) Extractive Metallurgy of Copper, 2"d Edition, Pergamon Press, New York, NY. Biswas, A.K. and Davenport, W. G. (1994) Extractive Metallurgy of Copper, 3rd Edition, Elsevier ... Warrendale, PA, 197 212. Biswas, A.K. and Davenport, W. G. (1980) Extractive Metallurgy of Copper Zfld Edition, Pergamon Press, New York, NY. Biswas, A.K. and Davenport, W. G. (1994) Extractive ... connected in parallel. Modern cells are made of pre-cast polymer concrete (Davenport, et al. , 1999). Polymer concrete is a well-controlled mixture of river sand, two liquid self- setting...