THE COLLIERY GUARDIAN AND JOURNAL OF THE COAL AND IRON TRADES. Vol. CX. FRIDAY, OCTOBER 15, 1915. No. 2859. EXTENSIONS AND IMPROVEMENTS AT THE A Large Installation of Koppers’ Regenerative Coke Ovens, with Complete SHOTTON COLLIERY. By=Product Recovery Plant, One of the oldest collieries now being worked in the, northern coal field is that at Shotton, county Durham. This colliery was opened in December 1842, and was operated for many years by the now defunct Haswell, Shotton, and Easington Coal and Coke Company Limited, but it was eventually closed in November 1877. The Shotton Colliery continued inactive until it was re-opened in May 1900 by the Horden Collieries Limited, which was formed by a number of influential northern coal owners, and incorporated in January 1900. The board of directorate of the Horden Collieries Limited is composed of Sir Hugh Bell, Bart, (chairman), Mr. E. R. Whitwell (vice- chairman and managing director), Sir James B. Dale, Bart., and Messrs. A. J. Dorman, W. R. Innes Hopkins, Arthur F. Pease, H. G. Stobart, and John Temple. The company’s registered offices are at Darlington, with Mr. Thomas W. Marley as secretary, and Mr. William Byers as assistant secretary. In addition to this colliery, it will be remembered that the Horden Collieries Limited have very successfully developed new sinkings at Horden and at Blackhall, also situated in the eastern portion of the Durham coal field and distant about ten miles north- ward of the Hartlepools. At the Horden Colliery the output just previous to the outbreak of war had been brought up to a total of 842,000 tons annually, whilst at Blackball, then in course of development, the output had By FREDERICK C. COLEMAN. 1,000-ton Coal Storage Hopper, Coal-charging Lorry and Incline for Coal Cars. I and ground to a size suitable for coking purposes. It is then conveyed by a bucket elevator to a ferro-concrete bunker, of 1,000 tons capacity. This bunker is divided into 12 hoppers, three in a row, corre- sponding to three hoppers under a charging machine. Shotton coal contains about 30 per cent, of volatile matter, and it is not compressed, but charged into the ovens from the top by means of an electrically-operated charging machine travelling along the top of the ovens on rails. The machine is provided with three hoppers, and each oven is charged at three different points. When the coal has been discharged into the ovens it is levelled by a beam carried on a machine travelling along the front of the ovens. This machine also carries a ram for discharging the coke. A somewhat unusual arrange- ment is adopted for dealing with the coke. As the coke is discharged from the ovens, it passes through a Darby type of quencher, and it is then guided by an anti- breaker into a coke car, where it is quenched and subse- quently conveyed to the coke screening and loading station. The coke car is in two sections, each capable of taking the charge of one oven. The car travels in front of the battery, and it is taken by means of an endless rope and motor-driven haulage gear to the screening and loading station. By the operation of a wheel, the gates are lifted, and the coke slides from the car on to the inclined coke screen. The dust and breeze pass through the bars, and the coke remains at the Li® Sie/.-.z General View of Coke Ovens and By-Product Plant. reached 27,000 tons annually. Since its re-opening in May 1900, the Shotton Colliery had undergone very con- siderable alteration, the plant and machinery has been greatly extended and improved, and the annual output has attained to one of 452,000 tons. Included in this development work is a battery of 60 regenerative coke ovens, designed upon Koppers’ latest principles, and having complete apparatus for the recovery of tar, ammonia, and benzol. This installation has recently been put into successful operation, and is illustrated in the accompanying drawings and photographs. It will be gathered by reference to the general arrangement drawing that the coal from the Shotton Colliery is conveyed to the washery, and there washed bottom of the screen, from whence it is discharged on to a belt arranged for loading direct into railway wagons. Accommodation is provided for the storage of about 2,000 tons of coke. The ovens are each approximately 32 ft. 10 in. long, 8 ft. high, and 20 in. mean width. Each oven is heated by vertical flues at about 60 points, so as to secure even