Document evYDJG33gVDmKVb7m8yOVZVve

presence so2^f$csto, eix on flooro, equipment, end clothing, * ci^^jDluMkwL,.4oct generation curing scooping and weighing. * Th* levels, ditsing three different sampling period^ were 8.74 fibers/ml ,- 3.01 fibers/ml, and 5.19 fiberc/ml. These values ^ do not very significantly from those encountered at core / fastidious blok preform operations. This lack of effect of parsonal variables tends to further indicate that the oource of excessive asbestos exposure is common in origin. Remain ing, heavy sources of exposure at both book and blok prefora are the mix buggies and the manual operations associated there with. In relation to the airborne lead results in Appendix No. 2, excursions above the 0.15 agAi* Threshold Limit Value were confined tc two locations in Blok Preform. One of the loca tions was blok preform No. 5 (cample No. 25) which, as pre viously stated, was selected for sampling because of excessive duct goner at ion and poor housekeeping conditions. This opera tor also worked at Blok Frefora No. 3 during the morning hours (sample No. 10) where airborne lead levels were high (.135 rog/l^) but not above the Threshold Limit Value. It would be aaviscable to provide this operator with instructions a3 to proper work habits and the need for consistent good housekeeping. Throughout tho plant. It was observed that only a few people were wearing respirators. In known exposure areas, only one man was so equipped. This operator's respirator was not worn continuously during dusty operations, but was only worn when the operator himself felt that protection was warranted. X inspected the respirator after the operator h3d deposited it on a dusty.^lndge, and found it to be dirty, and smudged both inside and ou4, and the filter was thoroughly caked with asbestos fibe^tt^and particulates. It Is imperative that a respiratory protection program be established In the plant whereby all exposed employees are provided with and required to wear approved, properly main tained respiratory protection. This recommendation has been sot forth In several previous reports. Although respirators are provided on a voluntary basis within the plant, thio is not sufficient since virtually all of the exposed employees remain unprotected, to have any positive or lasting effects the program must be implemented cn a mandatory basis. In addition, tho employees should be thoroughly instructed in tho use of the equipment, and a central maintenance progran should ba established.