Document qz61eLnD9NepmD7VQQDBJ235

FILE NAME: Power Generation (POW) DATE: 1936 DOC#: POW023 DOCUMENT DESCRIPTION: Excerpt - Trade Journal December, 1936 Staybolt material in the storeroom represents a relatively small cost per bolt. Forged, threaded and applied, as a replacement in a locomotive, it represents more than a dollar in actual cost. In many cases the out-ofservice cost for the locomotive must be added to this. Yet between the poorest staybolt material and the best there is a negligible difference in material cost. The use of Agathon Alloy Staybolts keeps renewal costs at a minimum. Agathon Staybolt Steel has high tensile strength, high resistance to fatigue, and high resistance to corrosion. It with stands the high pressures, the constant vibra tion and weaving of the firebox. It gives longer service at lower costs. Specify Agathon Staybolt Steel for your difficult jobs. Complete details on request. Address Department BM. December. 1936 C om m ittee Report! on Dust Control The report of the preventive engineering committee of the Air Hygiene Foundation, written by Professor Philip Drinker of Harvard, chairman, and other technical spe cialists on the committee, advises that engineers in the "dusty trades" can and should cut heavy dust concentra tions helow the present limits warranted by medical knowledge. This action is important, the report explains, not onlv to further safeguard the health of workmen but to give employers the maximum protection against un just claims. Concerning the size of dust particles, the report ol serves that much has been made of the fact that particles found in autopsied lungs are of the order of 1 micron ( % 5 ooo f an inch)-- about like the common bacteria. It is argued, therefore, that the human anatomy and physiology exercises ``some phenomenally accurate size grading which excludes larger particles." The report says "there is no reason whatever to look for any such mysterious explanation. The sizing is done in the air before the dust is breathed and not by the man after it has been breathed." It is pointed out that the larger particles tend to fall from the air by their own weight and that "only those small enough to act as part of the transporting air stream are likely ever to reach the lungs." "In diseases such as silicosis and asbestosis, particles must reach the alveoli (minute air sacs of the lungs) or no silicosis or asbestosis results. In maladies like hay fever, the harm is done by particles which may be 15-30 microns instead of 1 micron. "Toxic dusts such as lead and manganese are much more likely to produce ill effects if breathed than if swal lowed. The reason for this difference is physiological; it is established and should not be ignored in dust con trol problems. Again, common-sense tells us that the finer particles of lead are vastly more apt to be breathed than the larger. "It follows then that dust control for hygienic reasons should be aimed at the fine rather than the coarse parti cles. Continuing this argument to its logical conclusion, if one could avoid use of 1 micron dusts or less, or ex clude them from the dust which passes a 325-mesh screen, nearly all dust diseases would be eliminated. This is not at all an academic idea, for de-dusting processes are not new and are being applied in many industries. If some of the mechanical ingenuity which is now being applied unthinkingly to creating 1 micron dust were directed to ways for avoiding it, probably it would be discovered that dusts which are too large to be breathed would serve many processes just as well as those which are around 1 micron in size." The report includes a table giving latest available in formation on the minimum air velocities necessary in certain industries to insure the maintenance of dust con centrations at safe levels. The preventive engineering committee asserts that many firms have neglected heavy dust concentrations in cases where the dust is of no proven harm, and adds: "There is no satisfactory medical answer at present to this question, but the engineer is making a had mistake if he lets men breathe heavy dust concentrations of any material. If no other reason for dust control can be found, then one should read transcripts of some of the recent suits at common law in which fantastic damages for alleged silicosis were granted to men who breathed dust containing little nr no silica. The courts and com- tions between dusts with 10 percent and 40 percent quartz, especially when medical experts are reluctant to make definite statements as to the comparative signifi cance of such differences. " It would be well to realize that men working in dustv trades suffer far more from respiratory troubles of ail kinds than do men who work in clean air. The evidence that excessive dustiness of any kind is harmful is beyond argument." The committee attributes the handicap in this general field to the lack of fundamental data and recommends a number of specific engineering researches for the Foun dation to undertake in the coming vear. Bpulilic Appoint! .Special Itcp rcK cn fa liv e William Hogenson has been named special representa tive on Toucan Iron enameling stock, according to an an nouncement by F. If. Ramage, manager of sales promo tion. Republic Steel Corporation. His work will be in conjunction with that department under the new Product Development Division. Mr. Hogenson comes to Repub lic with a background of technical and business training gained at the universities of Michigan and Chicago, and a close association with the enameling industry through his most recent connection. Chicago Vitreous Enamel Products Company. E n g in eerin g E x p e rim e n t s'H ullel ins The Engineering Experimental Station of the Uni versity of Illinois has issued recently a series of bulletins dealing with a variety of engineering problems. Bul letin Xo. 283. written by Frederick G. Straub, deals with "A Study of the Reactions of Various Inorganic and Organic Salts in Preventing Scale in Steam Boilers." Bulletin Xo. 284, dealing with "Oxidation and Loss of Weight of Clay Bodies during Firing," was written bv William R. Morgan. Bulletin No. 285, "Possible R e covery of Coal from Waste at Illinois Mines," was written by Cloyde M. Smith and David R . Mitchell. Bulletin Xo. 286, by Hardy Cross, discusses and de scribes an "Analysis of Flow in Xetworks of Conduits or Conductors." Copies of these publications mav be obtained without charge upon application to the Engi neering Experimental Station, Urbana, Til., up to March 1, 1937, or until the supply is exhausted. B y e rs A ppoints N ew M an ag er of Sales Prom otion M. J . Czarniecki, vice-president in charge of sales, A. M. Byers Company, Pittsburgh, announces the follow ing appointments that were made effective November 2, 1936: George B. Cushing as manager of sales promotion. Mr. Cushing came with A. M. Byers Company in 1928 to organize and head the present advertising department. Subsequently in 1931 he organized a technical promotion group now known as the Engineering Service Depart ment. B. D. Landes, who has been in the technical group since its inception, has been appointed manager of the Engineering Service Department. T. C. Winans, who has been in the advertising depart ment since 1930, has been appointed advertising man ager. Both the manager of the engineering service depart-