Document vBna0mRyVe9DKqNXoBNd2OVQb

1 thing, and more clearly shows in this case the air Page 2656 2 samplers collected on both sides of the breathing 3 zone. 4 This is the respirator the gentleman has and 5 there is one of the pumps, little tubes that go up his 6 back, that are pulling the air from this area through 7 the filter, and then down and exhausted through the 8 pump. 9 Q This is a fiber as you would see it under 10 the transmission electron microscope. It is magnified 11 probably up on the screen here, probably 100,000 12 times. 13 Generally when we are looking at it in a 14 microscope, it would be the 20,000 times that I 15 referred to before. 16 A couple of interesting things -- I didn't 17 get the micron marker, but approximately this distance 18 from here to here is about five micrometers. So we 19 have here a fiber longer than five micrometers, but it 20 is quite thin, and this fiber would not be seen by the 21 light microscope technique.