Document ymwVQpLjKwr5E6MmZB0omYnR3

\*,r .. : '_.*. '. v ;?*> r*y ;; w vy^<^rn> *?t- I -* < < Tniufltrial Hygiene Digest - 49 :k_. 7; aVJ August, 1949 974 Prevention of Gas KxplQBlons In Chemical Manufacturing Plants. Elvyn Jones. J. 80c. Chen. Ind. 60, 117-118 (April, 1949). " t Ihe normal method of eliminating the danger of explosion vith mix i tures of an Inflammable gas and air or oxygen Is to render the mixture ! Incapable of flame propagation by using a large excess of one component, i or by the addition of on Inert diluent. Consideration of the limits of < Inflammability of mixed gases suggest another and more powerful method, namely, the introduction of an additional Inflammable Ingredient of a type which has a lov upper limit of flame propagation. The limit concen tration being measured by volume, suitable additives will normally be 1 characterized by a high molecular velgbt. A vide choice of such materials Is available so that a suitable additive can probably be found to satisfy any specific requirements. -- Author's Summary 975 Personal Tactors In Industrial Accidents. A Study of Accident Proneness In an Industrial Group. W.A. Wong, and O.E. Hobbs. Ind. Hed7 IB7 fe91-294 (July, 19W. " Ihe accident prone vorker can be Identified by a simple analysis of the frequency of occurrence of superficial Injuries. Those who have the most frequent minor accidents have a disproportionate number of major V accidents. The personal history of the ..high accident group differs from the lov by being marked by evidence of aggression and Intolerance for family, social, or work discipline. This evidence suggests that the basic I cause is to be found In the life-long pattern of emotional reaction that Is uninfluenced by reason or education. If It is determined that a vorker Is accident prone to a marked degree, there Is little to offer except transfer to a less dangerous occupation. -- Authors' Summary and Conclusions l' i Bev Equipment f. 976 Supplemental List of Respiratory Protective Devices Approved by the Bureau I of Hines7 Additions to List Published In Inf. Clrc. Ho. 74u4. L.B. Berger. 1 Bur. Nines Xnf. Clrc. Ho. 7513* 3PP* (April, 1949). i One to tvo In each of six types of masks or respirators have been approved since the publication of Inf. Clrc. Ho. 7444, In March, 1948, (JBT Abstract Ho. 332 Nay, 1946). Their approvals are listed here. 77 Hey Devices far Disability Evaluation: 1 Hand. Wrist, Itodloulnar, Elbow and Shoulder krgographs. r.A. Hellebrandt, Helen T. Bkovlual and IJt.A. Kelso".' -Arch. Ptvyv. Ned. Sg, p.21 (Jam. 1948). A series of self-contained, Ink-writing ergographs were developed for the appraisal of the functicnel capacity of the major articulations