Show rr coal of ya english coal is of a soma what low quality not only does it con slate lata an and other dother earthy imp impurities but also unfortunately pyrites more than one halt half of which consists of sulphur our coal fields aro are being worked out with a velocity which produces anxiety in the minds of all who arminter ested about the future of the country con we cannot afford to waste aven wen tha poorest kind of fuel and tho the propriety of fr restricting exportation trtat h has P en been urged with powerful menta but in the meantime the burning of im fan pure and dirty coal is a source of tribulation to housekeepers and of injury to manufacturers A process of mr ludrigs Luh rigs appears tc be an improvement upon various previous attempts renders s it possible for colliery owners to clean and to some extent purify without great the coal bedora it is sent away the tha try system s tem involves a ceries of copek aaion in which are included chided iri dry separation breaking sizing washing recovery ol of jandie automatic transportation etc it is said eaid that the method is ia already in successful operation in many places an e from a sanitary no less than from an economic co point of view every one muse amna opa for its emilou lancet lancel |