Document J603BXNy3qJQ8wagXKVKBmr

18 energetic application of preventive measures should be apparent in a great reduc tion in the incidence of fibrosis. An immediate temporary rise in the incidence rate is probable, due to the accumulated damage, partly a legacy of the war years, but with the passing of the peak, a steady fall should ensue. Much generous assistance has been received from many sources during the course of this investigation; these are gratefully acknowledged elsewhere. Special thanks are due, however, to Dr. E. W. Twining of Manchester and Dr. N. Tattersall of Leeds for their indispensable expert assistance in the elucidation of the radiological features, to Dr. W. E. Cooke, Professor M. J. Stewart, and Dr. Roodhouse Gloyne, whose researches in the same field are well known, and to Dr. I. M. D. Grieve for information from an unpublished study of a group of asbestos workers. References. 1. Seiler, H. E., Brit. Med. Jnl., 1928, II, 982. 2. Departmental Committee on Compensation for Industrial Diseases. (a) Minutes of Evidence, Appendices and Index, 1907. Cd. 3496, p. 127. (b) Report. 1907. Cd. 3495, p. 14. 3. Cooke, W. E., Brit. Med. Jnl., 1924, II, 147. 4. Cooke, W. E., Brit. Med. Jnl. 1927, II, 1024. 5. McDonald, Stuart, Ibid. p. 1025. 6. Badham, C., Studies in Industrial Hygiene, No. 13, Report of the Director- General of Public Health, New South Wales, 1927. 7. Cooke, W. E., and Hill, C. F., Jnl. Royal Micros. Soc. 1927 , 232. 8. Cooke, W E., Brit. Med. Jnl., 1929, II, 578. 9. Gloyne, S. Roodhouse, " Tubercle ", 1929, X, 404. 10. Stewart, M. J., and Haddow, A. C., Jnl. Path, and Bact., 1929, XXXII, 172. 11. Simson, F. W., Brit. Med. Jnl., 1928 I, 885. 12. Wood, W. Burton, and Page, D. S., *' Tubercle ", 1930, XI. PART II. Processes Giving Rise to Dost and Methods for its Suppression. 1.--Introduction. The asbestos industry, has developed greatly in recent years and continues to expand rapidly, mainly because of the demands of the motor, electrical, engineering and building industries, and of the increasing attention now paid to the insulation of steam plant to promote fuel economy. Asbestos products may, for convenience, be divided into seven main groups:-- Textiles. (a) Yarn and cloth. Non-Textiles. (b) Millboard, paper, asbestos-cement sheets, tiles, and other build ing materials, sheet material of rubber or bituminous mixtures contain ing asbestos. (c) Insulation materials and articles. (d) Brake and clutch linings. (e) Packing and jointings. (f) Asbestos-covered electric conductors--electrodes, cables and wiring, coils for electric machinery. (ig) Miscellaneous, including moulded electrical and other goods, etc. Some factories make both textile and non-textile goods. So-called " fiberized " asbestos, i.e., opened or broken-up material in a fine flock-like