Table 2.

Analysis of heavy metals in hair samples.

Heavy Metals	Miners	Non-Miners
Hg, μg/g *	0.93 (0.72–1.44)	0.63 (0.53–0.67)
Pb, μg/g	6.09 (3.67–17.61)	5.26 (2.08–8.77)
As, μg/g	0.20 (0.12–0.33)	0.16 (0.11–0.24)
Cd, μg/g	0.04 (0.01–0.10)	0.05 (0.02–0.17)
Cu, μg/g	11.09 (10.11–13.27)	11.92 (10.82–15.09)

Values are expressed as median (interquartile range). * P = 0.01; Mann–Whitney test.