Document 5DpBo9pZ8yM9y64Yvzap0r11R

1 Fleischer-Drinker study was published and one year Page 2076 2 after the ACGIH talked about the TLVs -- are you 3 familiar with a document known as the Hemeon report? 4 A Yes. 5 Q And what did Mr. Hemeon talk about as it 6 relates to the threshold limit value of five million 7 particles per cubic foot? 8 A Well, what Dr. Hemeon tried to do was gather 9 information from asbestos products plants mostly 10 which, I think, were textile, trying to gather 11 information on the occurrence of disease among these 12 individuals, but also trying to look at what their 13 exposures were, and he questioned whether or not the 14 threshold limit value of five million particles per 15 cubic foot was protective for asbestosis. 16 Q Now, did the threshold limit value of five 17 million particles per cubic foot, was it ever reduced 18 by the ACGIH? 19 A Well, it eventually was. In 1968 they 20 published a notice of intent to drop that value to 2 21 million particles per cubic foot or 12 fiber PCC, a