Table 2

Potential exposure pathways via six body areas and the protective effect of the 12 PPE

Exposure pathway	Inhalation		Dermal exposure							Whole body
Body area	PPE ^MOUTH		PPE ^EYE	PPE ^HAND	PPE ^UP-BODY		PPE ^LEG		PPE ^FEET	PPE
Relative contribution	0.1		0.1	0.4	0.2		0.1		0.1	1
PPE items	Dust mask	Mask with carbon filter	Goggles	Gloves	Overall or long-sleeve shirt	Rubber apron or rain poncho	Overall or long pants	Gaiters or waterproof pants	Rubber boots	Cumulative effect over all PPE
PPE quality	W	NWP	NWP	W or NWP	W	NWP	W	NWP	NWP
Exposure reduction when using PPE
All the time (100%)	0.30	0.10	0.10	0.20	0.30	0.10	0.30	0.10	0.10
Most of the time (75%)	0.48	0.33	0.33	0.40	0.48	0.33	0.48	0.33	0.33
Often (50%)	0.65	0.55	0.55	0.60	0.65	0.55	0.65	0.55	0.55
Rarely	0.83	0.78	0.78	0.80	0.83	0.78	0.83	0.78	0.78
Never	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00
Actual exposure: example for best possible protection	0.03	0.01	0.01	0.08	0.06	0.02	0.03	0.01	0.01	0.14