Document Jr3em4ebrYGGwGOeqkXwQwxYX

1 adhere to the circumference of the insulation. Page 3280 2 Q The jury has heard this term 85 percent 3 magnesium pipecovering. 4 Do you know what that is? 5 A Yes, sir, I do. 6 Q Will you briefly tell them what that is? 7 A 85 percent mag was the product that was a 8 high temperature insulation prior to the calcium 9 silicates. 10 That was a bonded material that contained 11 asbestos back in the '30s, '40s, '50s. 12 Q Did you ever compare the dustiness to 13 Kaylo? 14 A Yes. My knowledge of handling them and 15 cutting them, the 85 percent mags that I saw in the 16 late '50s, early '60s contained -- they were much 17 dustier than the calcium silicates. 18 They didn1t have the same thermal and 19 physical properties that the calcium silicates had, 20 and overall, they didn't have the moisture resistance 21 that the calcium silicates did.