Document VKJV5LaJ5ko86VMeeZDe1XNO4

1 Rohl, that represents numbers that appear to be Page 3144 2 somewhat higher than that, but the measurements are 3 different units, so they are not truly comparable 4 numbers. 5 They are measuring with different techniques 6 and really measuring different elements, although they 7 were called the same. 8 Q Can you explain what the differences in' 9 measurement were? 10 A Yes, sir. I have said earlier that the 11 measurements that are required to be measured measure 12 those fibers that are greater than five microns in 13 length and have an aspect ratio or a length to 14 diameter ratio in excess of three. 15 Q Is that what is commonly referred to as an 16 OSHA fiber? 17 A Some people refer to it as a federal fiber 18 or an OSHA fiber, but those are the bases for all of 19 the standards. 20 Fortunately, maybe not for science, but for 21 comparison purpose the people at Mount Sinai chose to