Effects of stone crushing industry on Shorea robusta and …
The amount of stone dust suspended in the air at crusher sites was 4 – 7 times higher than the prescribed norm in India. The SPM should not exceed the level of 500 µg/m 3 in industrial areas according to National Ambient Air Quality Standards (NAAQS) provided by the Central Pollution Control Board ( CPCB, 1995 ).
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