June 27, 1913. THE COLLIERY GUARDIAN 1423 ___ THE -___ Koppers’ Coke Oven has been proved to be the most successful on the market, as is evidenced by the fact that in the comparatively short period of ten years orders for over 10,000 Ovens have been placed with us, of which number over 4,250 are repeat orders. These orders represent a capital cost of over __ <£8 500,000. -- SIMILAR SUCCESS ATTENDS THE INTRODUCTION OF -__ KOPPERS’ NEW SYSTEM OF BYE-PRODUCT RECOVERY. In the New System the Scrubbing process is entirely dispensed with, and the Ammonia is recovered direct from the Gas in the form of Sulphate. ADVANTAGES OF SYSTEM Effluent Liquor reduced by 50 per cent, and upwards. Great Saving in Steam Consumption. Greater Yield of Sulphate and Benzol. Consumption of Water is considerably Reduced. Less Labour Cost. Plant is Simpler to Operate, and requires less Supervision. Plants already at work and under construction to deal with the Gases evolved from upwards of 25,000,000 tons of coal per annum. Particulars on Application to— _______________________________ THE KOPPERS’ COKE OVEN AND BYE-PRODUCT CO., ^Telephone Nos. 1935 & >33i (two lines). 301; CflOSSOJP SIHEFFIEl. KOcfiT SHEFFIELD.” FIRE ENGINE MAKERS. By Appoint- ttent MERRYWEATHERS’ I i Largest Maker* ef High-do. HOSE PIPES in the Werli. Dab-Sab Canvas for Fira Duty. Admiralty Leather for Flushing. Amoored Rubber for Mines. Write Dm MHtete «i Hom,** and quotattaw. MERRYWEATHER