Overlap syndrome with Sjögren’s syndrome and systemic sclerosis in a steel rolling mill worker: a case report

Table 3 The results of working environment measurement for dusts in rolling mill part

Survey year	Type of dust	Site	Concentration (mg/m³)	Exposure limit (mg/m³)
2008	Type 2 dust^a	Roughing mill	1.444	5
		Intermediate mill	0.417
		Finishing mill	0.556
2013	Unspecified mineral dust^b	Roughing mill	1.349	10
		Intermediate mill	0.841
		Finishing mill	2.384

ISSN: 2052-4374