Occupational Health and Safety Issues in Ontario Sawmills and Veneer/Plywood Plants: A Pilot Study

Table 3

Summary of wood dust concentration as total dust and noise at 22 sites.

Site	Classification	Hardwood %	Softwood %	𝑁	Dust max	Dust min	Noise max	Noise min
					(mg/m^3)	(mg/m^3)	(dB(A))	(dB(A))
5	Sawmill/planer mill	0	100	25	2.219	0.009	111	57
17	Sawmill/planer mill	0	100	21	1.419	0.003	105	68
20	Sawmill/planer mill	0	100	28	0.669	0.004	117	64.5
3	Veneer plant	30	70	23	0.319	0.001	102	55.8
8	Scrag mill	35	65	11	0.451	0.003	97	58
9	Log mill	35	65	8	0.246	0.005	100.4	68.1
12	Band mill	40	60	14	0.631	0.013	103.8	60
13	Scrag mill	40	60	10	0.856	0.009	102	75
14	Planer mill	40	60	3	0.209	0.017	109	104
6	Scrag mill	55	45	6	0.963	0.278	97	71.8
7	Log mill	55	45	9	0.359	0.029	102	56.8
21	Sawmill	60	40	11	0.824	0.006	101	50
1	Sawmill	95	5	9	1.000	0.003	105.2	69
16	Planer mill	95	5	6	0.139	0.017	92	59
22	Sawmill/planer mill	95	5	18	0.577	0.054	107.2	75.1
2	Plywood/particleboard plant	98	2	32	0.825	0.002	100	57
10	Sawmill/planer mill	98	2	20	0.159	0.008	100	61.3
4	Sawmill	100	0	13	0.700	0.021	107.8	64
11	Sawmill	100	0	8	4.875	0.063	107.9	71.5
15	Plywood plant	100	0	31	0.933	0.022	107	62
18	Sawmill	100	0	8	0.468	0.001	108	65
19	Flooring plant	100	0	9	0.447	0.013	107	76

𝑁: number of dust and noise measurements.