Document byypv3QkwBpgj6jpaz41Ee4bO

1 Q -- approximately? Page 2228 2 A Of total dust, yes. 3 Q Right, of total dust. 4 I think in another point in your direct 5 examination you explained at some point that -- hold 6 on, let me make sure I got this in my notes right. 7 About two million particles per cubic foot 8 equals approximately 12 fibers? 9 A That is the conversion that was used by the 10 ACGIH. 11 Q There are some problems with that, weren't 12 there? 13 A In 1968, and whether or not that applies to 14 these short fibers wear dust, we don't know. 15 Q Well, let's just assume for a minute then 16 that the conversion factor does apply. 17 Do you recall when you visited the 18 Cincinnati municipal garage if during the blowing out 19 process that you sampled whether there was visible 20 dust? 21 A Clearly the same process we saw in the film,