Document Lgax9pvzRoQ3mjYZ4w7Y968R7

Mr. Robert S. Magdelain, President Page 2 April 10, 1979 Sample Description Nanograms/cu meter Flbera/milllllter (electron microscopy) (optical microscopy) TEST 01 N-l Background (70 feet from operator) N-2 Operator (breathing zone - 6 ft. from dust collector) N-3 Dust collector (HEPA-filtered vacuum) 400 0 0 0 0 0 TEST #2 N-4 Background (70 feet from operator) N-5 Dust collector (HEPA-filtered vacuum) N-6 Operator (breathing zone - 6 ft. from dust collector) 615 0 59,000 0.12 0 0.5 TEST 03 N-4 Background (same as in Test #2) N-7 Operator (breathing zone - 6 ft. from dust collector) N-8 Dust collector (HEPA-filtered vacuum) 615 0 0 0.12 0 0