Camborne School of Mines Magazine Vol. XIII No.4 Includes articles on: - 'Editorial' - 'Our Letter Bag' A list of letters C.S.M Magazine has received - 'Calculating the Contents of Ore Piles' - 'Route Surveying by the Tangential Method' A summary of Route Surveying and different methods - 'Zinc Dust Precipitation at Cerro Prieto' by Robert Linton - 'The Expedition to S. Wales' - 'Notes by Boryer' A summary of recent events - 'Jottings from the Rand' A summary of the Rands findings and living standards - 'Correspondence' A poem to the Editor - 'Old Students Column'. 1909 Jun