Facts Concerning the Use of Judson Powder in Mining Anthracite and Bituminous Goal. IT T is generally believed that only black powder can be used for coal mining, and that no explosive containing nitro-glycerine in any proportion can be employed because of the expense and greater waste of coal which it is assumed would result. As a matter of fact, Judson Powder, which contains a small percentage of nitro-glycerine, has been regularly used, in increasing quantities, for more than eight years at mines in the Hazleton District of Pennsylvania. Critical tests made at the Cross Creek Colliery, under the direction of the Hon. E. B. Coxe, prove that Judson Powder, although ATLANTIC DYNAMITE COMPANY SUCCESSORS TO of higher price than black powder, is nevertheless more economical to use. Instead of making more fine coal, as was at first feared by some, the opposite has been found to be the case; less small coal being made with Judson than with black powder. The cap which is required to explode the Judson was objected to at first, but we know of no acci JUDSON POWDER dent happening with either the caps or powder during eight A SUBSTITUTE FOR BLACK POWDER. Guaranteed 50 per cent stronger than the best Black Powder, and far safer to use. Adapted for all kinds of years' constant use; blasting where Black Powder has heretofore been used. on the contrary, comAlso dealers in Blasting Ct, Fuse, Electrical Batteries, etc. For sale in all sections of the country by our au petent miners rate the thorized Agents. Judson as safer than common blasting powder, since sparks or flame from miners' lamps will not explode it; a lighted lamp may be thrown into a package of Judson Powder without danger. Users notice that the smoke from Judson Powder is much less than that from black powder, which makes it possible to quickly and thoroughly inspect the walls after making a blast, so that the miner is enabled to better guard against the fatal falls of top coal which are so common. We refer to our customers for confirmation of our claims as to safety, economy and power. For further particulars address SMALL & SCHRADER, Gen. Agts.. 245 BROADWAY, NEW YORK. 5 JAMES MACBETH & CO., MANUFACTURERS OF ELECTRIC PLATINUM FUSES, BLASTING BATTERIES, Standard Electric Fuse and Blast Tester, Insulated Wires, Reels, and Specialties in Rock Blasting Supplies. 128 MAIDEN LANE, NEW YORK, U. S. A. Improved Hoisting Engines FOR MINES. 1, 2 or 4 Drums, with Reversible Link Motion or Patent Improved Friction. Made only by the LIDGERWOOD MANUFACTURING CO., 96 LIBERTY STREET, NEW YORK. 34 & 36 West Monroe St., Chicago. 197 to 203 Congress St., Boston. AGENTS: Moses P. Johnson, St. Louis, Mo.; Hendrie & Bolthoff Mfg. Co., Denver, Colo.; Utah & Montana Mach'y Co., Salt Lake City, Utah. USEFUL BOOKS. THE SCIENTIFIC PUBLISHING CO., Publishers, 27 Park Place, N. Y., U. S. A. American Methods of Copper Smelting. By Dr. E. D. PETERS. Illustrated. Price, $4 in Cloth; $5.50 in Cloth and Morocco. This is the best work on Copper Smelting in any language. Copper Smelting, Its History and Processes. By HENRY HUSSEY VIVIAN, M. P. Price $2. An extremely valuable and very scarce work. The Mining Code of the Republic of Mexico. By RICHARD E. CHISM, Mining Engi. neer. Price $1. Translated from the Official Editions in the Original Spanish. The Lixiviation of Silver Ores with Hyposulphite Solutions. By CARL A. STETEFELDT. Illustrated. Price, $5 in Cloth. The best book on the subject. Mining Accidents and their Prevention. By SIR FREDERICK ABEL. Price, $4. With a supplement containing the laws governing coal mining in the United States, Great Britain and Germany. This is a complete and admirable statement of MODERN COAL MINING. An invaluable book for every one interested in mining. The Metallurgy of Steel. By HENRY M. HOWE, Mining and Metallurgical Engineer. In press. Gems and Precious Stones of America. By GEORGE F. KUNZ, Mineralogist to Tiffany & Co., N. Y. Price, $7.50. In press. ALL BOOKS ON COAL MINING. Electric Generators, Electric Motors, Cars, Electric Mine Drills, Electric Power Pumps, Electric Fans. COMPRESSED AIR COAL MINING MACHINE. Power Drills, Chain Belting, Elevating and Conveying Machinery. SEND FOR CATALOGUE. THE NORWALK IRON WORKS CO. SOUTH NORWALK, CONN. JOHN N. POTT, Mem. Am. Soc. C. E. and Am. Inst. M. E., CIVIL AND MINING ENGINEER. WILKESBARRE, PENNA. Special attention paid to the Surveying, Exploring and Developing of Coal Lands. WILLIAM S. GRESLEY, F. G. S., C. C. M., MINING ENGINEER AND PRACTICAL GEOLOGIST Can be Consulted upon his Proposed New Method of Mining THE WESTMINSTER, SCRANTON, PA. H. M. CHANCE, CONSULTING MINING ENGINEER AND GEOLOGIST, 418-420 DREXEL BUILDING, PHILADELPHIA. SPECIALTIES: Examination of Coal and Iron Properties, Mining Methods and Appliances. Reports on Mineral Properties. Mines Managed. RICHARD P. ROTHWELL, CIVIL AND MINING ENGINEER, 27 PARK PLACE. NEW YORK. Editor of ENGINEERING AND MINING JOURNAL, P. O. BOX 1833 Examines and Reports on Mineral Properties, Advises on the Working and Management of Mines, Acts as Consulting Engineer to Companies. Specialty, Coal and Iron. |