Document DDOVyxwnrn1v2r9q5q3Q7qzYQ

Confidential Mellon* Institute of Industrial Research UNIVERSITY OF PITTSBURGH PROGRESS REPORT for the week ended March 23, 1946 INDUSTRIAL HYGIENE FOUNDATION Subjects under which report is to be indexed Industrial Fellowship No. 259-12 3 copies made: 1 - Mellon Institute 2 - Industrial Hygiene files Several samples of dust from Bird and Son, Inc., were separated into size fractions by sedimentation. Reports for investigations made for Pittsburgh Corning Corporation and Royal Indemnity Co. were completed. Preparations were made for surveys of the factories of Hazel-Atlas Glass Co. at Clarksburg and Grafton, W.Va. . R 4/8/46 T 4/8/46 R &PRU'946 (3P- Francis R. Holden Senior Fellow