Document ze74gedrjdx3ovbzYagx51Y0

Page 2099 1 Q Now, when were procedures we just saw that 2 were depicted on the tape, when were procedures like 3 that instituted or developed? 4 A They began to be developed in the '70s, the 5 early '70s, and certainly it is a commercial market, 6 so those that came on in the early '70s, mid '70s to 7 early '80s. 8 Q Now, you mentioned high efficiency vacuum 9 system? 10 A Yes. 11 Q Does that include use of what is known as 12 HEPA filters? 13 A That is what it means, high efficiency and 14 particular air filter. 15 All it means is a special filter that has 16 the capability of collecting these very, very small 17 particles of asbestos. 18 A regular vacuum cleaner bag that you find 19 in vacuum cleaners, it won't collect these particles 20 very efficiently, they will pass through it. They are 21 very small. The pores, it will go right through.