.... 53,220,000 43,240,000 689,277 Lead . , . . . . . . Zinc . . . . . . . . 989,500 647,585 Tin . . , . . . . . Aluminium . . . . . . ~ 92,607 16,197 Tons. 72,400,000 83,500,000 1,393,500 1,475,250 1,129,200 140,890 210,000 Ij , 36.1 93.0 102.2 49.0 74.2 50.5 1,212.0 Let us imagine this in theform of a cylinder...

... solution is led through two iron launders to the gold tank in the zinc-precipitationhouse. Slinzes Cyanide Xreatment.- The slimes overflowing the slat-gates of the sand-collecting vats are led by launders to two ironcollecting cones, one of which is 20 feet diameter and 20 feet 92 inches high...

...J C HAWKSHAW; W WESTON; S A HOUGHTON; F TOMLINSON; C W DARLEY; B BLOUNT; J T MILTON; W J LARKE DECAY METALS TUBES CONDENSERS ANALYSIS ZINC MUNTZ SHIPS HARBOURS PILES PROTECTION TEREDO BORERS SHEATHING © Thomas Telford and ICE 1903 ADMIRALTY MUNTZ proceedings...

... Report,which showed that wherebrassor bronze was i n close contact with copper the former rapidly lost zinc; while when brass or bronze was in close contact with iron, the dezincking did not take place, but it was the iron which was attacked. It might be noted, how- ever, that the iron had only lost i n...

...J T MILTON; W J LARKE © Thomas Telford and ICE 1903 DECAY METALS CHEMICAL ANALYSIS CAST IRON CORROSION PIPES TUBES ALLOYS ELECTROLYSIS SEA WATER CONDENSERS DETERIORATION COPPER ZINC ELECTROLYTIC ACTION EXPERIMENTS BRASS IMPURITIES MUNTZ 138 MILTON AND LARKE...

...C HAWKSLEY; F W WEBB; F C TIPLER; J A F ASPINALL; J M DOBSON; W C UNWIN; W PILKINGTON; S B TRITTON; SIR F BRAMWELL; D HALPIN © Thomas Telford and ICE 1902 LOCOMOTIVES ENGINES FIREBOXES STAYS TESTS BOILERS COPPER ZINC ALLOYS JOINTS RIVETED RAILWAYS METALS WASTAGE 114...

...F W WEBB © Thomas Telford and ICE 1902 FIREBOXES STAYS COPPER ZINC ALLOYS ENGINES LOCOMOTIVES ANALYSIS TIN TENSILE STRENGTH ALUMINIUM TESTS STEEL TEMPERATURE RIVETING CHEMICALS BOILERS RAILWAYS MILD BESSEMER FAILURES WASTAGE HEADS LEAKAGE FRACTURE BREAKAGES...

... Burfacecondensers thatthe severe formofcorrosion knownas '(pitting " could only be prevented by the continuous expenditure of an amount of zinc, the cost of which was a not unimportant item in working-expenses. In the application of zinc the follow- ing points required attention :-First, it should be in the form...

... LEACHING TAILINGS TREATMENT SOLUTIONS LIQUIDS WOOD ORES POTASSIUM ZINC MACHINERY METHODS ELECTROLYSIS PRECIPITATION MINES MINING GOLDFIELDS METALS 18 DISCUSSION ON THE CYANIDE PROCESS. [&IiiIinutesOf Discussion. Sir Douglas Sir DOUGLAFSox, Vice-President, was sure it would...

... AMERI © Thomas Telford and ICE 1893 SMELTING PROCESS SILVER EXTRACTION GOLD FUMES FURNACES METALLURGY SLAG ORES FUEL JACKETS SMELTERS COLLECTION WATER CALCINATION COPPER MINES MINING METALS ZINC CARBONATES MATTE MINERALS LEAD 172 DISCUSSION ON SXELTISG PROCESSES...

... DEPOSITS ZINC SULPHIDES TIMBERING LIXIVIATION PROCESS CARBONATES GEOLOGY METHODS METALS POISONING MINERALS BROKEN HILL NEW SOUTH WALES AUSTRALIA Discussion. Mr. Hnyter. Mr. HARRISEOANYTPEreRsi,dent, said it was some time since the Institution had brought before .it the subject...

...H F COLLINS © Thomas Telford and ICE 1893 SMELTING PROCESS EXTRACTION SILVER GOLD ORES LEAD METALLURGY REDUCTION FURNACES CONSTRUCTION JACKETS FUEL COKE SLAG SULPHIDES ZINC TREATMENT WORKS COPPER COSTS METALS PRACTICE WATER MINERALS CARBONATES SMELTERS...

...D PHILLIPS LIQUIDS HOT COLD IRON PRESERVATION CORROSION EFFECT ZINC SEAWATER BOILERS TESTS PLATES METALS TEMPERATURE EXPERIMENTS WATER SEA SULPHURIC ACID SALT SODIUM CHLORIDE SODIUM CHLORIDE PROTECTION Papers.] PHILLIPS OS THE EFFECTS OF LIQUIDS OX IROX. 295 (Paper...

... that ironelectricalconductorsshouldbecoveredwith zinc,notwithstandingzinc was readily dissolved in softwater. He might mention some observations that hadbeenmade,and experiments tried, with the hope of harmonising opposing views. A galvanized iron roof exposed for fifteen years still retained the mott,led markings of a new plate, though...

... of resinous vapours (39). More practicalsuggestionswere soon forthcoming, andthe use of the salts of variousmetalsbegan to berecom- mended. SirHumphreyDavysuggested corrosive sublimate ; Thomas Wade (in l815), the salts of copper, iron, and zinc (39). The opinion gainedground that poisons of various kinds...

...J W CHENHALL © Thomas Telford and ICE 1883 TREATMENT COMPLEX ORES CONDENSATION LEAD FUMES ZINC FURNACES SMELTING METALLURGY COPPER SULPHATES SILVER METALS L O N G I T U D I N ASLE C T I O N C R U S H I 'N%G? I L L . T R A N S V E R SSEE C T I O N . L O N G I T U D I N ASL E...

... for abstracting from its encycloptdic character, will be found to be of great service as a compendium of the present state of knowledge upon this importantclass of mechanical contrivances. It has subsequently been issued in a separate form. The great increase in the consumption of zinc both as metal and as oxide...

... oxidation without attaining perfect success, and whether this curious action of nitric acid on iron might some day furnish the clue to the discovery of a preservative of iron was more than he could say. Mr. SHOOLBRoEbsDerved withregard to the durability of zinc in this country, that it was principally used...

...E CLARK © Thomas Telford and ICE 1868 MATERIALS DURABILITY CONSTRUCTION BUILDINGS DECAY HUMIDITY DAMP MOISTURE METALS RUST CORROSION ZINC COATINGS COPPER ACTION ROOFS 554 THE DURABILITY OF MATERIALS. May 12, 1868. CHARLES IIUTTON GREGORY, President, in the Chair...

...W THOMSON; R HUNT; W R GROVE; TYNDALL; C COWPER; SMEE; PETRIE; G P BIDDER; T ALLAN; GRAVATT; E HIGHTON; R STEPHENSON ELECTROMAGNETISM MOTIVE POWER ENGINES MAGNETISM MAGNETS ELECTRICITY BATTERIES PROPULSION FORCES CURRENTS MACHINERY ELECTROMAGNETS ZINC OXIDATION 400. ELECTRO...