Document R2ORVQndB7eN89GaE0G9X3K7

Table 7-B (1977) Facility G Fiber Air Sample Results Optical Microscopy Operation/Area BRAKE REBUILDING Brake Mechanic I Brake Mechanic II Brake Mechanic III RELINING DEPARTMENT Rivet Operator Punch Operator Partsman Sample # D-3 D-8 D-13 D-4 D-7 D-15 D-2 D-6 D-9 D-10 D-14 D-12 D-16 D-17 D-5 Volume (liters) 240 246 280 184 512 272 160 184 106 168 296 100 126 66 400 Time (min) Concentration Fibers > Sum/cc 120 1.09 123 3.24 140 0.804 TWA 1.68 92 0.289 256. 0.62 TWA 0.53 136 0.52 80 2.0 92 5.59 53 7.53 84 6.84 148 2.68 TWA 4.47 50 7.31 63 5.90 33 10.92 TWA 7.52 200 1.21