Camborne School of Mines Magazine Vol.58 2 Copies includes articles on: - 'Editorial' - 'The Identification - Largely by Staining Techniques - of Coloured Mineral Grains in Composite Samples' by K.F.G. Hosking -'Open Pit Mining at Minas de Rio Tinto, Spain' by Charles W. Smith -'Breast Stoping at Jakobsbakken Gruber, Norway' by G.D. Deshpande - 'Some Preliminary Observations on the Effect of Surface Conditioning in Magnetic Seperation' by F.B.Michell and C. Jones - 'Ion Exchange Process at The Quirke Mill of Algom Uranium Mines, Ontario, Canada' by C.B.B. Raju - 'A Note on the Identification of 'Insoluble' Sulphates' by K.F.G. Hosking and J.P.R. Polkinghorne -'Notes on a Shaft Plumbing Operation carried out on the Connemara Mine, S. Rhodesia'' by L.P. Watermeyer -'Obituaries' of F.M.Ball, J.M. Barnett, H.C. B ayldon, N.C. Cooke, P. Davis, P.B. Everest, J.B. Gundry, E.A. Knapp, S.C. Mills, C.H. Trezise and David John Short.. -'Club Notes' 1958 June