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Environmental Sciences Europe

Table 4 Dust and quartz concentration in different mines and their associated health risk [21]

From: Concentration, sources and health effects of silica in ambient respirable dust of Jharia Coalfields Region, India

Area

Dust conc. (mg/m3)

% quartz in dust

MEL (mg/m3) India

MEL (mg/m3) US

Health risk

JCF

0.26–2.37

Trace-0.8

3

2

Low-V.V.H

Zn mines

0.22–15.88

Trace-88.2

Trace-3

0.11–3.57

Low-V.V.H

Mn mines

0.14–9.90

Trace-62.3

0.24–3

0.15–2

Low-V.V.H

  1. MEL, mean exposure level; V.V.H, very very high
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