Percent of establishments that use respirators by selected type of use, 2001

	
	
Type of use		Percent

Required emergency	11.9
Voluntary and required	18.8
Required non-emergency	47.8
Voluntary only		49.4
	
	
	
Percentages do not sum to 100, in part	
because some establishments used 	
respirators for more than one type of use.