November 10, 1916.THE COLLIERY GUARDIAN.933 --- THE -- Koppers’ Coke Oven Is undoubtedly the most successful Bye-Product Oven on the market. Since its introduction a little over 10 years ago there have been built 15,000 KOPPERS’ OYENS. KOPPERS’ OVENS ARE AT WORK HEATED BY PRODUCER GAS AND BLAST FURNACE GAS. KOPPERS’ DIRECT RECOVERY PROCESS IS THE SIMPLEST ANO MOST EFFICIENT SYSTEM OF AMMONIA RECOVERY. PLANTS ERECTED FOR THE RECOVERY OF BENZOL & TOLUOL, FOR TAR DISTILLATION & THE MANUFACTURE OF SULPHURIC ACID. ■ — Full particulars on application to ...... The Koppers’ Coke Oven and Bye-Product Co., 301, GLOSSOP ROAD, SHEFFIELD. Purchasers’ Guide to Advertisers’ Specialities—(continued). "SLEEPERS (IRON AND STEEL) —Traverses enfsr et en acier Allen, W. G., and Sons (Tipton) Ld„ Tipton Baird, J. W., and Co., West Hartlepool Bickley, Wm., Eclipse Sleeper Works, Bloxwich, Walsall Bute Works Supply Co. Ld., Cardiff Benton, B. M., and Co., Midland Works, Sheffield *$MITH Work—Outrages de forge Lowmoor Co. Ld., Lowmoor Ironworks, Bradford Wright’s Forge and Engineering Co. Ld., Tipton *SMOKE HELMETS—Casques protecteurs contre fu/mAes Mining Engineering Co. Ld., Sheffield Siebe, Gorman and Co. Ld., Westminster, S.E. •Spanners Fastnut Ld., 115, Newgate-street, London <$PEED-REDUOINQ Gears—Engrerwges d reduction de vitesse Wood, John, and Sons Ld., Wigan Sphincter Grip Armoured Hose—Tuyaux armes Beddaway, F., & Co. Ld., Pendleton, Manchester Springs—Assorts Lancaster and Tonge Ld., Pendleton, Manchester Wigan Wagon Co. Ld., Springs Branch, Wigan Stampings—stowages Chorley Bailway Wagon Co. Ld., Chorley Hardy Patent Pick Co. Ld., Sheffield 'Head, Wrightson and Co. Ld., Stockton-on-Tees Lowmoor Co. Ld., Lowmoor lionworks, Bradford -STEAM EXPERTS—Spetialistes en tout ce qui concerns la vapeur Fell, C. A., Dronfield, near Sheffield Princeps & Co., Sheffield Boyles Ld., Irlam, Manchester 'STEAM Fittings—Garnitures de chaudieres Baldwin, James, and Co., Keighley, Yorks Hopkinson, J., and Co. Ld., Huddersfield Boyles Ld., Irlam, Manchester Bussell, John, and Co. Ld., Alma Works, Walsall Scottish Tube Co. Ld., 34, Bobertson-st., Glasgow Stewarts and Lloyds Ld., Birmingham & Glasgow Steam Mains and Pipe Installations — Conduites de vapeur Stewarts and Lloyds Ld., Birmingham A Glasgow Steam-Saving Appliances - jtfconomweur* de vapeur Boyles Ld., Irlam, Manchester x STEAM TRAPS—Turgeur® de vapeur Auld, D„ and Sons, Whitevale Foundry, Glasgow Baldwin, James, and Co., Keighley, Yorks. Hopkinson, J., and Co. Ld., Huddersfield Lancaster & Tonge Ld., Pendleton, Manchester Princeps & Co., Sheffield Boyles Ld., Irlam, Manchester Stewarts and Lloyds Ld., Birmingham & Glasgow United States Metallic Packing Co. Ld., Bradford Wright’s Forge and Engineering Co. Ld., Tipton STEAM Wagons— Voitures autos d vapeur Mann’s Patent Steam Cart and Wagon Co. Ld., Hunslet, Leeds 'STEAM WINCHES—Treuil® a vapeur Clarke, Chapman & Co. Ld., Gateshead-on-Tyne Phillips, C. D., Newport, Mon. Wood, John, and Sons Ld., Wigan STEEL—Fabricants d’acier Cooke, William, and Co. Ld., Tinsley, Sheffield Cradock, George, and Co. Ld., Wakefield Haden and Co., Patricroft Hadfields Ld., Hecla Works, Sheffield Hardy Patent Pick Co. Ld., Sheffield Hodgson, E. W„ and Co., Sheffield Howell A Co. Ld., Brook Steel Works, Sheffield Latch and Batchelor Ld., Hay Mills, near B’ham Mining Engineering Co. Ld., Sheffield Shelton Iron, Steel & Coal Co. Ld., Stoke-on-Trent Stead, J., and Co. Ld., Manor Work?, Sheffield Stewarts and Lloyds Ld., Birmingham A Glasgow Thompson and Co., Wigan STEEL Blooms, Billets—Loupes et lingots en aciw Cradock, George, and Co. Ld., Wakefield Scott, Walter, Ld., Leeds Steel Works, Leeds STEEL Flats AND Rounds—Larrea et ronds en acier Scott, Walter, Ld., Leeds Steel Works, Leeds Stead, J., and Co. Ld., Manor Works, Sheffield STEEL TINBARS—Bidons d t6les defer-blanc Scott, Walter, Ld., Leeds Steel Works, Leeds Stencil Plates, Steel Stamps, Ao.—Patrons poinqons, &c. Lawson, John, and Sons, 26, Carver-lane, Sheffield Pryor, Ed., and Son, 112/116, Bockingham-street, Sheffield Stockbrokers. Chapman, Wm., & Co., Wheeler Gate, Nottingham Stokers (Machine). Bennis, Ed., and Co. Ld., Little Hulton, Bolton Stone Breakers—Casse-pierres Hadfields Ld., Hecla Works. Sheffield Hardy Patent Pick Co. Ld., Sheffield Johnson, Wm., A Sons (Leeds) Ld., Armley, Leeds Stonedust Grinding Plant—Broysurs (poussiirs de schistes) Bradley Pulverizer Co., 37, Walbrook, E.C. Fletcher, George, and Co. Ld., Litchurch, Derby “ Jeffrey’’—Hugh Wood & Co. Ld., N’castle-on-T. Johnson, Wm., & Sons (Leeds) Ld., Armley,Leeds Scholefield, Bd„ Burley Vale, Leeds STRUCTURAL Steelwork—Constructions en acier Goodall, Clayton and Co. Ld., Hunslet, Leeds Hardy Patent Pick Co. Ld., Sheffield Scott, Walter, Ld., Leeds Steelworks, Leeds Wright’s Forge and Engineering Co. Ld., Tipton Sulphate of Ammonia Plant-Appareiis d recuperation du sulfate d amvtnonxaque Copp^e Co. (Gt. Britain), Kings way, London Koppers’ Coke Oven a Bye-Product Co., Sheffield Simon-Carves Ld., 20, Mount-street, Manchester Sulphur Recovery Plant—Apparels a recupera- tion du souffre Coke Oven Construction Co. Ld., Sheffield Copp^e Co. (Gt. Britain) Ld., Kingsway, W.C. Daglish, Bobt., and Co. Ld., St. Helens, Lancs. Koppers’ Coke Oven A Bye-Product Co., Sheffield Superheaters—Surckattfeurs Clarke, Chapman and Co. Ld., Gateshead-on-Tyne Galloways Ld., Manchester Pulsometer Engineering Co. Ld., Beading Surplus Steam Valves (Full Bore)—Soupapea auvapeur en trop plein Auld, D., and Sons, Whitevale Foundry, Glasgow Baldwin, James, and Co., Keighley, Yorks Hopkinson, J., and Co. Ld., Huddersfield Boyles Ld., Irlam, Manchester SURVEYING (Books on)—Manuel d'arpentage Thomas, Wm., Cambrian Mining School, Forth Surveying ( Instruction ) — Rnseignement (arpentage) Thomas, Wm., Cambrian Mining School Forth Surveying Instrument Makers — Appareiis d arpentage Davis, John, and Son (Derby) Ld., Derby Harling, W. H„ 47, Finsbury Pavement, London Hay, H. E , Peninsular House, 28, Monument- street, London Stanley, W. F., A Co. Ld., 286, High Holborn, W.C. Thornton, A. G., Ld., King-st. West, Manchester SWITCH Boards—Tableaux de distribution Haslam and Stretton Ld., Cardiff Holmes, J. H., and Co., Newcastle-on-Tyne SWITCH Gear—Commutateurs eiectriques Anderson, Boyes A Co. Ld., Motherwell, Scotland British Insulated and Helsby Cables Ld., Prescot Haslam and Stretton Ld., Cardiff Holmes, J. H., and Co., Newcastle-on-Tyne TAN KS — Reservoirs Daglish, Robert, and Co. Ld., St. Helens, Lancs. Goodall, Clayton and Co. Ld., Hunslet, Leeds Harvey, G. A., ACo.(Lndn.) Ld.,Woolwich-rd.,S.E. Head, Wrightson and Co. Ld., Stockton-on-Tees Isca Foundry Co. Ld., Newport, Mon. Theedam, E. C., Ld., Dudley Ward, Thos. W., Ld., Albion Works, Sheffield Wright’s Forge and Engineering Co. Ld., Tipton Wood, John, and Sons Ld., Wigan Tachographs and Tachometers—Tacheometrss Davis, John, and Son (Derby) Ld., Derby Tar Distilling Plant—installation® a distiller i« goudron Coke Oven Construction Co. Ld., Sheffield Copp^e Co. (Gt. Britain) Ld., Kingsway, London Daglish, Boot., and Co. Ld., St. Helens, Lancs. Koppers’ Coke Oven A Bye-Product Jo., Sheffield Simon-Carves Ld., 20, Mount-street, Manchester TECHNICAL EDUCATION—Enseignement technologique Southern, T. A., Universal Mining School, Cardiff Thomas, Wm„ Cambrian Mining School, Forth Telephones—Telephones British Insulated and Helsby Cables Ld., Prescot Davis, John, and Son (Derby) Ld., Derby Haslam and Stretton Ld., Cardiff Timber (Colliery)—Borages Baird, J. W., and Co., West Hartlepool Forslind, C. A., and Son, West Hartlepool Jennings, C., and Co. Ld., Pennywell-rd., Bristol Osbeck and Co., Newcastle-on-Lyne Turner, E. W., A Co. Ld., Bloxwich, Staffs Time Recorders National Time Recorder Co., 5, Blackfriars-road, London, S.E. Tools—Outiis Fell, C. A., Dronfield, near Sheffield Haden and Co., Patricroft Hardy Patent Pick Co. Ld., Sheffield Howell A Co. Ld., Brook Steel Works, Sheffield Tool Steel Stead, J,, and Co, Ld„ Manor Works, Sheffield Towers (Cooling) Davenport Engineering Co. Ld., Harris-st., Brad- ford, Yorks Tram and Wagon Corner Plates—Cornier®® pour voitures Baker, John, and Son, Bilston, Staffs Chorley Bailway Wagon Co. Ld., Chorley, Lancs. Theedam, E.C., Ld., Dudley Transformers (Electrical) — Tran®/ormat®ur® eiectriques British Electric Transformer Co. Ld., Hayes, Middlesex Davis, John, and Son (Derby) Ld., Derby Transport Plant—Transporteurs British Ropeway Engineering Co. Ld., 7, Mincing- lane, London, E.C. Haggie, R. Hood and Son, Nowcastle-on-Tyne Trommels—Trommel* Barns, W., and Son, Globe Works, Holloway Johnson, Wm., A Sons (Leeds) Ld., Armley, Leeds Spencer and Co. Ld., Melksham, Wilts Tubbing and Well Cylinders—Cuveiages Head, Wrightson and Co. Ld., Stockton-on-Tees Wood, John, and Sons Ld., Wigan TUB DRAWBARS—Tiges de traction pour berlines Chorley Bailway Wagon Co. Ld., Chorley, Lancs. Theedam, E. C., Ld., Dudley TUBE Fittings—Accessoires pour tuyauteries Dixon, S., and Son Ld., Swinegate, Leeds Lewis, Edwin, and Sons Ld., Wolverhampton Bussell, John, and Co. Ld., Walsall Scottish Tube Co. Ld., 34, Bobertson-st., Glasgow Spencer, John, Ld., Wednesbury Stewarts and Lloyds Ld., Birmingham A Glasgow TUBES (Iron AND Steel)—Tubes en wet en aciw Allen, W. G., and Sons (Tipton) Ld., Tipton Dixon, S., and Son Ld„ Swinegate, Leeds Howell and Co. Ld., Sheffield Lewis, Edwin, and Sons Ld., Wolverhampton Lewis, William, and Son, Bilston Bussell, John, A Co. Ld., Alma Tube Wks., Walsall Scottish Tube Co. Ld., 34, Bobertson-st., Glasgow Spencer, John, Ld., Tube Works, Wednesbury Stewarts and Lloyds Ld., Birmingham A Glasgow Wellington Tube Works Ld., Great Bridge, S ffs Tub Greasers and Controllers—Appareiis