Document xzXk9e9aMxgYv5OLveVb0ZX7G

CONFLDLNTIAL Mellon Institute of Industrial Research PLAINTIFF'S EXHIBIT IHF-31S UNIVERSITY OF PITTSBURGH I PROGRESS REPORT for the Veek ended June 18, 19^+3 INDUSTRIAL HYGIENE FOUNDATION Subjects under which report is to he indexed Industrial Fellowship No. 259-lk 3 copies made: 1 - Mellon Institute 2 - Industrial Hygiene files The entire full dayd devoted to Henrietta, Oklahoma. -`----.----j--------------------.--.. , veek vasspent in preparation and travel, including two. the dust durvey at the Pittsburgh Plate Glass'Plant in . ^ . r . .. . . ... \ .: " ; n.'. ""*<**'* -v --V -r - r - . ....r'tu;*^Vs * --'V-.V - . - .... *'') r `ii I Harlov M.-Chapman Fellow _ B: 6/22/U6 T: 6/23/43 B:: /<r - 'O' * .. ' r- ;; . ; .= * 1 ' -. vT?*JEi'v. .rii r-lrv. `vk'.95MS i JUL141948 j ' t.. V v`-` ... . I'A-MrawTA'' . - . *. .** , -_ r i.O. - , -v. : . v : s~\ r* r\ ry ,v Jri .. .'.-r.-V.