Document pBE2dbEn6ewQXRXZ6725KLLQD

C'os'kihkntjai. M ellon Institute of Industrial Heseajr UNIVERSITY OF PITTSBURGH PLAINTIFF'S EXHIBIT PROGRESS REPORT for the veek ended ^ay 27, 19^9 ITOUSroiAL HYGIEKE FOUNDATION Industrial Fellowship No. 259.15 Subjects under which report is to-be indexed A trip was made to Beaver Valley to service the three Trion installations at the St. Joseph Lead Company, and the . .homes of Mr. Wheaton and Dr. Long. One hundred and ten samples have Been received in the laboratory in less than three months. - Most of these have ' received a preliminary treatment before being sent out for analysis^ The Pittsburgh Plate Glass Company heat data was analyzed and is.bo be included in the report on dust, sulfur dioxide and ' heat exposures in their plant.-. ^` v'' All Donora and Beaver_-Valley Trion samples were weighed and calculations made to determine the amount of air-borne dust , B: June 7 19^9 T: June 9, 19*9"-V' B: - --vAV v a* . .. < irv .r,v \ 000044