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agitation alkaline alkaline sulphide allowed amalgamation amount antimony assay bottom bullion carbonate caustic cent charge concentrates consumption of cyanide copper cost crucible crushed cupel cyanide plant cyanide process cyanide solution cyanide treatment decantation deep diameter dilute discharge dissolution dissolved drained dry-crushed excess extractor ferrocyanide filled filter filter-press furnace gold and silver grams iron Kalgoorlie launder leaching vats lead lead acetate lime litharge mercury metal metallurgist method mill Mining obtained oxide oxygen pans passing percolation pipe plates potassium cyanide potassium ferrocyanide practice precipitation boxes present proportion pulp pump pyrites quantity residues roasting salt sample sands and slimes settle silver nitrate slag slimes smelting soluble solution of cyanide strength strong solution sulphate sulphide sulphuric acid sump solution tailings tank tion tons per day treated tube-mills Waihi wash weak cyanide weak solution Western Australia wet-crushing Zealand zinc boxes
Page 238 - With 201 Illustrations. 6s. net. AN INTRODUCTION TO THE DESIGN OF BEAMS, GIRDERS, AND COLUMNS IN MACHINES AND STRUCTURES. With Examples in Graphic Statics. BY WILLIAM H. ATHERTON, M.Sc., MIMECH.E.
Page 238 - Iron and Coal Trades Review. In Large Crown 8vo. Cloth. Fully Illustrated. 5s. net. SUCTION GAS PLANTS. BY PROF. CA SMITH, of the East London Technical College. CONTENTS. — Introduction. — Details of Construction. — Fuel and Testing. — Application and Uses of Suction Plants.— Working the Plant.— Typical Plants.— Plants for Special Purposes.— Total HP— Effluent.— Cost of Gas Production.— The Gas Engine.— Bibliography.
Page 215 - ... long intervals. The lead which contains from 2 to 12 per cent, of gold is then smelted into bars and cupelled. The gold is deposited on the lead sheets as a thin bright yellow film which adheres firmly to the lead. The process of cupellation is too well known to need description.
Page 239 - EDITION. 12s. 6d. A MANUAL OF THE STEAM-ENGINE AND OTHER PRIME MOVERS. With a Section on GAS, OIL, and AIR ENGINES, by BRYAN DONKIN, M.Inst.CE With Folding Plates and Numerous Illustrations.
Page 244 - Lecturer on Colouring Matters in the Victoria University of Manchester. Part I. Theoretical. Part II. Practical. Part III. Analytical. " We have no hesitation in describing this treatise...
Page 239 - A MANUAL OF PETROL MOTORS AND MOTOR-CARS. Comprising the Designing, Construction, and Working of Petrol Motors. By F. STRICKLAND. GENERAL CONTENTS.— PART I.
Page 239 - Leather, 8s 6d ELECTRICAL THEORY AND THE PROBLEM OF THE UNIVERSE. By GW de TUNZELMANN, - - ....... net.