Document emZp1w2n1xYoZboB6dpRY3DY9

Page 2108 1 That material is a fine powder; and if you 2 try to sweep it, it just creates another dust cloud. 3 MR. IGNATOWSKI: We can move on, Mr. 4 Shellenberger. 5 Q Now, is this another type of procedure that 6 is used? 7 A Yes. This is a whole series of commercially 8 available devices similar to the one we saw before. 9 There are just different designs that are used for 10 controlling dust. This one has got, I think, 11 Plexiglass shield in front. 12 It has a shield in the back that you slip 13 the brake off and actually tie it on to the axle 14 behind it and close off the dust. You have the vacuum 15 cleaner, the HEPA vac. That is what he is doing 16 here. 17 Q Again, is that a method of enclosing the 18 dust and preventing any leakage? T9 A That Plexiglas device we saw was the 20 enclosure. 21 This device, rather than using compressed