May 3, 1918. THE COLLIERY GUARDIAN. [supplement PAGE XIII.] 923 Coal Saving For Collieries. New Boiler Plants. As a result of 10 years experience as specialists in Economical Steam Generation, we are able to design and erect New Boiler Plants on the most modern scientific principles. We are further prepared to send you down one of our trained Engineers to instruct your Boiler House Staff in running the new plant until the most economical results are obtained, and to carry out at our Laboratories all the chemical analysis of Coal, Water and Flue Gases that may be necessary. The average working efficiency of Colliery Boiler Plants to-day is only about 50 J, but a new Plant designed by us would work at from 70—75 Z efficiency depending on the Coal used, representing an enormous saving. We shall be glad to explain our proposition personally or by letter, and are prepared to visit your Colliery free of charge and give you our opinion of the working of your boiler-plant. Ihwnlie & (brci'ii Jftl„ TECHNICAL CHEMISTS & ENGINEERS, SPECIALISTS IN FUEL ECONOMY. 2, AUSTIN FRIARS, LONDON, E.C. 2. Telephone - 6292 London Wall. Manchester - - 30, Cross Street. Glasgow ... 94, Hope Street. Laboratories and Testing Station, Church Street, Cheetham, Manchester. A* J /// At*- r> y ffMf »• ’"r ffyn^fr^. s' raw Quick Delivery From Stock. 3 MEDIUM AIR MACHINES. 2 SMALL 1 SMALL ELECTRIC „ HURD COALCUTTER AND ENGINEERING CO., Works : 35, Pitt Street, GLASGOW. Fq “SHELTON” IRON. London, 1862. ""CUES TAN ” CTEEI ( Siemens Y --------- OiltL lUll O | tCL VOpenHearthJ “GRANVILLE” PIG IRON (=.□ STEEL PIT GIRDERS & COLLIERY RAILS a Speciality; also High-class BAR IRON for Couplings, &c. IRON & STEEL BARS, ANGLES, TEES, CHANNELS, GIRDERS, PLATES & SHEETS, STEEL BILLETS, BLOOMS & SLABS. Enquiries to— --— ......———~ THE SHELTON IRON, STEEL & COAL CO. LTD., Via^dS’ Or 122, Cannon Street, London, E.C. 4 Telegraphic Address: “ Shelton, Stoke-on-Trent.” Tel. Nos. 11 and 253. | Telegraphic Address: “ Sheltonian, London.” Tel. No. 886 Bank. Gold Medals— Paris, 1878; Melbourne, 1881. Electrically Welded Steel CHAINS LION BRAND. OF EVERY DESCRIPTION. Ask for LION BRAND HAMES & TRACES. ----- Sole Makers: - Job Wheway & Son Ld., Walsall, Enc. •^^XLECTRICAL^^I "MEASURING if RECORDING INSTRUMENTS FOR MINES CABLE : A.B C. CODE. Telegraphic Address: “ Haggle, Gateshead.” Telephones: 3067, 3068. MAGGIE BROS. LTD ESTABLISHED 1800, GA TESHEAD-ON-TYNE B"s SUPERHEATERS A la A. A—.ils A _ < .-.- ■: s