Document 2JD5NqbYQbKmwxb912Y2De7Q6

MIellon Institute of Industrial Research UNIVERSITY OF PITTSBURGH PROGRESS REPORT for the week ended. March 12, 1947 INDUSTRIAL HYGIENE FOUNDATION Subjects under which report is to be indexed Industrial Fellowship No. 259-13 5 copie8 Bade: 1 - Mellon Institute 2 - Industrial Hygiene file The concentration of nercury vapor was measured in Room 512, Mellon Institute. "* Samples of dust and fume were obtained from the Slab Grinding Department, American Rolling Mills, Inc., Butler, Pa. This is a part of the Grinding Wheel Association study. A report was prepared on the survey made for Pittsburgh Plate Glass Company, Works No. 4, Ford City, Pa. Work was continued on the revised bulletin, Routine Sampling and Analysis of Air Contaminants. R: March 11, 1947 T: March 18, 1947 MELLON INSTITUTE i o J1 ~ ' ' *!' 5*1 Francis R. Holden Senior Fellow 23 SOM 7.4* 00042?