Document Q35d22vkLZX9YdmbMYJKO12E

AAL ^Iellon Institute of Industrial Research % UNIVERSITY OF PITTSBURGH PROGRESS REPORT for the reek ended June 1*, 1947 INDUSTRIAL HYGIENE FOUNDATION Subjects under which report is to be indexed Industrial Fellowship No. 2*9-1? 3 copies made: 1 - Mellon Institute 2 - Industrial iygiene files The "dustiness index" for Asbestos roving was continued, however the results were not too conclusive since the problem of duplicating results was still to be determined. Dust counts were made on the asbestos spirals and the material from the respective segments saved for silica analysis. ' Mr. R. Emmett Doherty of the Anthracite Coal Institute was familiarized with the Foundation's techniques of dust sampling and analysis. Size separations for Indemnity Insurance Company were continued. R: 6/16/47 T: 6/17/47 George F. Haines, Jr. Junior Follow OC0450