Document RpLBBznQe4pG0JBxGz5eex857

1 So they had to separate the dust measurements into Page 3382 2 total dust and asbestos dust. 3 When they did that, they found that most of 4 the time the asbestos dust levels were less than five 5 million particles per cubic foot. But in a few 6 instances, things like band sawing, tearing out old 7 insulation in enclosed ship compartments exceeded five 8 million particles. 9 When they examined the workers, somewhat 10 over 1,000, they found three cases of asbestosis, all 11 in people who have been employed greater than 20 years 12 in the trade. 13 They concluded on the basis of this that it 14 appeared that asbestos insulation, or the putting on 15 of insulation in ship construction, was not 16 particularly hazardous, but they did recommend that 17 the dust levels, where they were high, be controlled 18 and if necessary, the respirators be used particularly 19 in enclosed ship compartment. 20 Q This conclusion that working with asbestos 21 pipecovering was a safe occupation, that was published