Document X7vopB9KEJYjw2Rb7bk0NkLOd

i^ULV PLAINTIFF'S EXHIBIT AB-41 Abex Corporation American Grakeblok Division WWCHESTfR. VIRGINIA 22601 TEL 703-662-3871 November 20, 1967 Mr* C H* Borcherding, Jr* Industrial Hygienist Medical Department 4550 West 26th Street Chicago, Illinois 60623 Dear Mr* Borcherding: Industrial Hygiene improvements completed during 1967 and contemplated Tor 1968 are as follows: 1. NEW VENTILATION EQUIPMENT 1967 - Eight (8) Electric Roof Ventilators rated 21,800 CFM each, were installed in roof framing of Block Press Department to remove heat and fumes from area generated by steam heated presses* 2. IMPROVEMENT OF EXISTING VENTILATION 1967 - Three (3) window type fans were installed in monitor over North end of Book Press Department to re move heat and fumes generated by electrically heated presses* Each fan rated 14*000 CFM* 3. IMPROVED ILLUMINATION 1967-1968 - As Production Departments are relocated in expansion program, lighting methods are improved by fluorescent fixtures replacing incandescents and level of candlepower increased* 4* SUBSTITUTION OP NON-TOXIC MATERIALS FOR TOXIC 0 1967 - None NOV 2 71967 ABEX CORPORATION MEDICAL DEPT. AmMcanBwiMM SPNY 006363 s Mr. C. H. Borcherding, Jr. November 20, 1967 Page Tvo AIT? CHANfl-E IH TYPE OP SOLVENTS USED 1967 - None 6. NOISE REDUCTION MEASURES 1967 - None 7. ARE STATIC PRESSURE READINGS BEING TAKEN ON VENTILATION EQUIPMENT? 1967 - None. Ammeter readings are taken to control loading of motors - proper motor load is an Indication of the Dust Collector handling the approximate designed load. 8. HEAT REDUCING MEASURES 1967 - See Items 1 and 2. 9. AIR POLLUTION ABATEMENT MEASURES 1967 - None 10. INDUSTRIAL HYGIENE IMPROVEMENTS SCHEDULED POR 1968 1968 - None - Due to revamping Strip Finishing and Inspec tion Departments, additional Dust Collectors will be added. J.W. Riley/Jk cc: D. K. Rennie C. B. Mallory C. L. Curtis W. H. Baker f / JrjCa U jj i ^ Qi-n NOV 2 71967 ABEX CORPORATION MEDICAL DilP'TI . SPNY 006364