Document NZ1YJp2BgwLVM05eMJDyL1LQ

Industrial Hygiene Digest INDUSTRIAL HEALTH NEWS LITERATURE ABSTRACTS MEDICAL ENGINEERING CHEMICAL TOXICOLOGICAL LEGAL * decisions and trends JANUARY, 1954 (Vol. 18. No. 1) INDUSTRIAL HYGIENE FOUNDATION MELLON INSTITUTE 4400 FIFTH AVENUE PITTSBURGH 13, PA. Industrial Hygiene Digest January, 1954 months than after one month. With the middle grades then were two types of reaction, possibly due to agglomerations and discrete particles respec tively, The decrease in proliferation from the finest may be due either to elimination after solution or removal by microphages. Experiments are being continued. 71 Occupational Lung Damage in Ships* Repairers. L. Dumber, M. Sanger, & D, T. J. Bagnall. Brit. J. Radiol. 26, 590-594 (Nov. 1953). Occupational lung damage in ships1 repairers ("boiler-makers"), due to inhaled dust and/or fumes has been described for the first time. Analysis of the materials and the dusts to which these men are exposed while at work revealed the presence of free silica and iron compounds. Two broad groups are described, namely those with definite radiological changes and those without. Each group may be subdivided into those with severe symptoms, especially dyspnea resulting in incapacity, and those without symptoms. Post-mortem findings of severe emphysema with slight pneumoconiosis are reported in two men belonging to the group, with extreme incapacity in the absence of radiological lesions. -- Authors1 summary 72 Asthma and Silicosis. Queries and Minor Notes, J. Am. Med. Assn. 153, 1327 (Dec. 5, 1953). Asthma occurring for the first time in a 52-year-old person can he aggravated by silicosis. The type of dyspnea caused primarily by silicosis is due to damage of the lung parenchyma and to emphysema. In some persons with silicosis, bronchospasm is induced secondarily. It should also be remembered that a 52-year-old man may have allergic infections or cardiac asthma for the first time. If the patient in question has true asthmatic episodes (relieved by epinephrine or aminophylline), a search for other causative factar^ Af^ob&er^Ea- tions such as examination of the sputum for eosinophils and neutrophils, skin tests, and examination for hypertensive, coronary, or syphilitic heart disease. * 73 Asbestosis Bodies and Pseudo-Asbestosis Bodies. J. Ruttner. Schweiz. Z. Allgem, Pathol, u. Bakt$riol. 15, 628-631 (1952). German. The literature on asbestosis bodies is reviewed. Similar products were found by the author in a lung which only contained carborundum and graphite; the bodies were formed around plates and needles of carborundum. The protein and iron which form the bulk of the "bodies" must come from the lung tissues and not from the mineral matter of the dust. Similar bodies could also be produced in vitro but they have not so far been found in animal experiments. -- Bull. Hyg.