Table 2.

Results of welding fume exposure assessment.

	Welders			Environmental
	Respirable dust mg/m3	CrVI μg/m3	Mn mg/m3	Respirable dust mg/m3	CrVI μg/m3	Mn mg/m3	Total
	62	27	61	20	12	20	182
Mean	4.5	2.73	0.13	1.6	0.73	0.06
Min	0.4	0.00	0.00	0.2	0.00	0.01
Max	25.4	27.51	1.20	7.5	3.78	0.44
Median	1.8	1.41	0.05	1.0	0.03	0.03
8-TWA-	18.00 %	141	2.5	10.00 %	30	1.5
TLV of
Welding
fumes

Min, minimum.

Max, maximum.

Cr VI, hexavalent chromium.

Mn, manganese.