UNDERGROUND PUMP STATION-Continued. SAFE PRACTICE-Continued. Figure 178.-Underground centrifugal pump, 2,000 gallons capacity. Installation is satisfactory, except that room should be lined with brick or concrete, including floor. Figure 179.-Concrete-lined intake sump with gate to close off water from main sump seen in background. Figure 180.-Switchboard is satisfactory, except that wiring is not neatly done and the walls have not been lined with brick or concrete. There is no short-circuit protection, only overload for the motor. Figure 181.-Iron gate hung in tile frame inclosing underground station for main pump. Look at the pictures again-you may have missed something that means safety to you. LIST OF MINERS' CIRCULARS. A limited supply of the following publications of the Bureau of Mines has been printed and is available for free distribution until the edition is exhausted. Requests for all publications can not be granted, and to insure equitable distribution applicants are requested to limit their selection to publications that may be of especial interest to them. Requests for publications should be addressed to the Director, Bureau of Mines. The Bureau of Mines issues a list showing all its publications available for free distribution as well as those obtainable only from the Superintendent of Documents, Government Printing Office, on payment of the price of printing. Interested persons should apply to the Director, Bureau of Mines, for a copy of the latest list. PUBLICATIONS AVAILABLE FOR FREE DISTRIBUTION. MINERS' CIRCULAR 5. Electrical accidents in mines, their causes and prevention, by H. H. Clark, W. D. Roberts, L. C. Ilsley, and H. F. Randolph. 1911. 10 pp., 3 pls. MINERS' CIRCULAR 7. Use and misuse of explosives in coal mining, by J. J. Rutledge, with a preface by J. A. Holmes. 1913. 52 pp., 8 figs. MINERS' CIRCULAR 9. 1912. 16 pp. Accidents from falls of roof and coal, by G. S. Rice. MINERS' CIRCULAR 10. Mine fires and how to fight them, by J. W. Paul. 1912. 14 pp. MINERS' CIRCULAR 11. Jones. 1912. 16 pp. Accidents from mine cars and locomotives, by L. M. MINERS' CIRCULAR 12. Use and care of miners' safety lamps, by J. W. Paul. 1913. 16 pp., 4 figs. MINERS' CIRCULAR 13. Davis. 1913. 19 pp. Safety in tunneling, by D. W. Brunton and J. A. MINERS' CIRCULAR 14. Gases found in coal mines, by G. A. Burrell and F. M. Seibert. 1913. 23 pp. MINERS' CIRCULAR 16. 1914. 22 pp. Hints on coal-mine ventilation, by J. J. Rutledge. MINERS' CIRCULAR 17. Accidents from falls of rock and ore, by Edwin Higgins. 1914. 15 pp., 8 figs. MINERS' CIRCULAR 18. Notes on miners' carbide lamps, by J. W. Paul. 1915. 11 pp. MINERS' CIRCULAR 19. The prevention of accidents from explosives in metal mining, by Edwin Higgins. 1914. 16 pp., 11 figs. MINERS' CIRCULAR 20. How a miner can avoid some dangerous diseases, by A. J. Lanza and J. II. White. 1915. 24 pp., 4 figs. MINERS' CIRCULAR 21. What a miner can do to prevent explosions of gas and of coal dust, by G. S. Rice. 1915. 24 pp. MINERS' CIRCULAR 23. Elementary first aid for the miner, by W. A. Lynott and D. Harrington. 1916. 24 pp., 19 figs. PUBLICATIONS THAT CAN BE OBTAINED ONLY THROUGH THE SUPERINTENDENT OF DOCUMENTS. MINERS' CIRCULAR 2. Permissible explosives tested prior to January 1, 1911, and precautions to be taken in their use, by Clarence Hall. 1911. 12 pp. 5 cents. MINERS' CIRCULAR 3. Coal-dust explosions, by G. S. Rice. 1911. 22 pp. 5 cents. MINERS' CIRCULAR 4. The use and care of mine rescue breathing apparatus, by J. W. Paul. 1911. 24 pp., 5 figs. 5 cents. MINERS' CIRCULAR 6. Permissible explosives tested prior to January 1, 1912, and precautions to be observed in their use, by Clarence Hall. 1912. 20 pp. 5 cents. MINERS' CIRCULAR 8. First-aid instructions for miners, by M. W. Glasgow, W. A. Raudenbush, and C. O. Roberts. 1913. 66 pp., 46 figs. 15 cents. MINERS' CIRCULAR 15. Rules for mine rescue and first-aid field contests, by J. W. Paul. 1913. 12 pp. 5 cents. C |