Document byyZgLw9k7ZKYR3xe0RRpjGyg

Industrial Hygiene Digest - 26 I Aueuet. 101^ or entirely absent, These results nay have value In their bearing an dls. trr In **'(' thrp*utie administration of aluminum powder In the treatment of silicosis. The aluminum powder probably does not reach as deep levels of the lungB as does silica. It La suggested that unequal dls. trlbutlan of the powder could be prevented If the lungs of the workmen vere dilated with an aerosol before the administration of the aluminum. It ia suggested that the potential benefits of pneumo-dlisting therapy after the working period In dusty conditions might be Investigated In field studies under competent control. -- Bull. Hyg. Ififc Industrial Health Hazards and Their Effects 1 i 901 Parathlon a Toxic Insecticide, Can Be Used With Precautions. Anon. Ind. Byg. Newsletter p. 3 (Aug. 1949). * A warning has been eent to State and local Industrial hygiene officials by Public Health Service, calling attention to the dangers of parathlon, } U one of the new Insecticidal chemicals. Chemically, parathlon Is 0,0-dlethjl O-p-nltrcrphenyl thiopboaphate. It can be used with safety only when all prr. cautions ore strictly observed. A leading manufacturer has produced two million pounds without employee Illness. Inhalation and skin contact must bt avoided. One o'f the first symptoms Is pulmonary edema. That condition should be carefully watched for, and an oxygen tent and atropine should be used when It is found. 902 Pathology of Carbon Disulfide: Heeearch on Cholinesterase Activity and on Vitamin B, Content of Blood. 0. Orazlanl and L. Pecora. ^olia med. 11, 129 (April 19W3) Italian. Orazlanl' and Pecora studied seventeen workmen, between the ages of 22 and 53, who worked In an olive oil distillery where carbon disulfide was used for the extraction of the oil. The concentration of the carbon disulfide In the air of the workrooms varied from 0.006 to 0.012 parts per thousand. This concentration Is much Inferior to that which by all the Investigators has been considered as the minimum limit of safety. In addi tion to clinical examination, determinations of the choleaterase activity of the serum ami of the thiamine content of the blood vere carried out for all the workmen studied. Hemochromocytometry was done likewise, and elec trocardiograms vere taken. Results shoved an Increase of cholesterase ac tivity, while the thiamine content was reduced considerably. Hypoglobulla and hypochromia vere present In eight patients. In eleven workmen mild bradycardia of slnal origin was observed; and In seven workmen the electro cardiogram shoved a triphasic rapid wave; these observations were Inter preted as symptoms of neurovegetative dystonia. -- J. Ind. Hyg. 1 Tox. rK ;! i 901 VI