Bulletin of the United States Bureau of Labor Statistics. no. 236, 1918, Utgave 236

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U.S. Government Printing Office, 1918

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Side 58 - ... and carving, but may make it impossible for a man to do outside cutting in cold weather or to take up a skilled trade which exposes the hands to cold. The trouble seems to be caused by three factors — long continued muscular contraction of the fingers in holding the tool, the vibrations of the tool, and cold. It is increased by too continuous use of the air hammer, by grasping the tool too tightly, by using a worn, loose air hammer, and by cold in the working place.
Side 92 - Health hazards from the use of the air hammer in cutting Indiana limestone, by JP Leake: Supposed physical effects of the pneumatic hammer on workers In Indiana limestone by D: L.
Side 114 - Reducing the time spent at any disadvantageous work and shifting to other forms of work is in many kinds of industrial disorders sufficient largely to overcome the trouble. In this- instance there is an obvious way of accomplishing this — by requiring the men to use...
Side 129 - Stone cutters are liable to a disorder affecting the hands, especially the left hand. 3. This disorder of the hands is of a vascular character, not due to organic changes in the circulatory system, but dependent upon vasomotor reactions. 4. These reactions are physiological in character and are occasioned by three factors incident to the work of stone cutting. These are : (a) mechanical irritation of the skin; (b) continued muscular contraction of a cramping nature; (c) low temperature, cold. 5....
Side 130 - ... nipped" by the cold more susceptible in these parts to the subsequent exposure to cold. This explains the occurrence of "white fingers" in stone cutters when not actually engaged at cutting but otherwise exposed to low temperatures. 9. There is no sufficient reason in the signs and symptoms presented in this disorder to conclude that one has to do with Raynaud's disease, acroparesthesia, neuritis or an occupational neurosis. 10. The institution of measures to warm the chisel before and while...
Side 40 - ... should furnish, and it is a very frequent sight to see an employee come to work with a mallet that has long outlived its usefulness, and a few tools that are but stumps and should be "thrown into the scrap heap or made into plugs. Another abuse of the pneumatic hammer is allowing apprentice boys to use it before they are thoroughly familiar with the use of the mallet, chisel, hammer, hammer points and pitching tools. The consequence will be that in a very short time new mechanics will be unable...
Side 112 - ... roughing out," while the older men have more familiarity with the mallet and use it a good deal. Mr. Griggs stated also that it is more common in the young men than in the older. He believed this due to the more common use recently of the larger hammer, but the older men state that they use the larger hammers as much as do the younger men.
Side 129 - ... the air hammer alone because : (a) it occurs in those who have not used the air hammer; (b) it does not occur in warm weather when the stone cutting industry is at its height and, therefore, when the air hammer is most in use; (c) it occurs mostly in the left hand and not in the right hand in which the hammer is held. 7. This vasomotor disorder is of temporary duration and is not known to have resulted in permanent disability of the hand, nor itself to have been the cause of development of any...
Side 107 - ... worse, the anxiety of the men was due more to this fear of further and more serious results than to anything known to have occurred. In fact, several of those with the most pronounced manifestations said to me that if that was all that it would do they thought it of comparatively slight consequence.
Side 129 - Conclusions drawn from a comparatively small series of observations must be subject to some limitations. However, the uniformity of the results of the examinations made in this . investigation, taken together with the testimony of the workmen and of others, reasonably justifies the following deductions.

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