Document OJkoZnB2V7pKdv55jOYdKLLrp

1 values. Page 2834 2 Its data is based primarily on chrysotile 3 exposure as investigated by Dr. Drinker in the early 4 '40s. 5 He pointed out that the same group of 6 shipyard workers were recently studied in more regard 7 to the development of asbestosis. Asbestosis was 8 diagnosed in a number of these workers. 9 Air samples were obtained using equipment 10 similar to that by Drinker. This demonstrated the 11 same level of atmospheric asbestos which Drinker found 12 in the 1940s and on which he based his suggested 13 threshold limit value. 14 It is, therefore, the consensus that of the 15 people who set the threshold limit values should be 16 lowered. 17 Skipping a couple of sentences. 18 From a practical standpoint, it would seem 19 reasonable that in addition to chrysotile threshold 20 limit value being restricted to zero, i.e., could be 21 used only when the applicator is wearing an air