Table 2: RSPM level in various sections.

Name of section/processInitial weight of filter ( )Final weight of filter ( )Volume of air sampled (liters) = volume of air (m3)Net Wt of dust (mg) (mg/m3)Pump running time (hrs)RSPM in 8 hrs (mg/m3)

Punching/blanking/trimming section
Location 160.561.85000.5001.32.60.9322.46
Location 259.260.64950.4951.42.830.9224.68
Location 356.857.95410.5411.12.031.00116.24
Location 458.960.25160.5161.32.520.9621.09
Location 556.857.85410.54111.851.00114.76

Forging section
Location 160.361.44530.4531.12.430.8423.16
Location 257.858.95160.5161.12.1320.9617.85
Location 359.260.55280.5281.32.460.9820.14
Location 459.260.45100.511.22.350.9419.93
Location 557.858.95160.5161.12.130.9617.84
Location 660.161.45410.5411.32.401.00119.18

Grinding section
Location 160.963.24500.4502.35.110.8349.06
Location 259.661.84500.4502.24.890.8346.93
Location 358.760.44050.4051.74.1970.7544.77
Location 458.260.65160.5162.44.650.9638.93
Location 557.859.74500.4501.94.220.8340.53

Polishing section
Location 157.159.75540.5542.64.691.02636.59
Location 258.962.35500.5503.46.181.01848.55
Location 359.561.95500.5502.44.361.01834.27
Location 458.961.45400.5402.54.63137.04
Location 558.561.35600.5602.85.001.03738.57

Moulding/casting section
Location 158.661.95500.553.36.001.01847.12
Location 257.760.25320.5322.54.70.98538.15
Location 359.261.45340.5342.24.120.9933.33
Location 458.961.35800.5802.44.141.07430.82
Location 559.262.25900.59035.081.09237.23

Broaching/marching section
Location 160.161.45800.5801.32.241.07416.69
Location 258.760.15900.5901.42.371.09217.37
Location 359.661.26500.651.62.461.20416.35
Location 458.659.45450.5450.81.461.00911.63
Location 558.659.55410.5410.91.661.00113.28

Tool room section
Location 157.358.25110.5110.91.760.94614.88
Location 257.358.35840.58411.711.08112.67
Location 358.659.55700.5700.91.571.05611.96
Location 457.658.55650.5650.91.591.04612.17
Location 556.657.55540.5540.91.621.02512.67

Electroplating/painting section
Location 158.459.56300.6301.11.751.16711.97
Location 258.659.96200.6201.32.0961.14814.60
Location 357.358.25900.5900.91.531.09311.16
Location 458.659.25450.5450.61.1011.0098.726

Gas cutting/welding section
Location 158.460.26300.6301.82.851.16719.59
Location 259.661.76200.6202.13.381.1523.60
Location 358.560.15900.5901.62.721.0919.85
Location 456.658.76500.6502.13.231.2021.47