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Permissible limit of spm at stone crushing unit

implementation except three locations. The maximum permissible level of SPM is 0.5mg/m3(Figure 3.3). As reported by Fader 1985, similar sound control measures implemented had been able to control sounds in the stone crusher sites successfully. 40 45 50 55 60 65 70 75 L1 L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 L12 L13 L14 L15 L16 L17 L18

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