Table 5.

Measured area respirable elemental carbon concentrations (μg m⁻³) by mining facility and sampling site

Mining facility	Underground face				Underground haulage/travel ways				Underground shop and offices				Surface
	n	AM	GM	GSD	n	AM	GM	GSD	n	AM	GM	GSD	n	AM	GM	GSD
A	14	661	69	1.4	10	412	307	2.8	2	424	424	1.0	4	2	2	1.2
B	6	230	226	1.2	17	158	98	3.5	1	3	3	NA	4	4	2	4.0
D	14	111	97	1.7	2	45	45	1.0	3	6	6	1.6	12	4	4	1.5
E	19	145	106	2.5	5	67	34	4.7	2	28	28	1.2	4	4	3	1.4
G	12	50	42	1.9	8	41	34	2.0	6	18	13	2.8	4	2	2	1.1
H	17	138	68	5.6	9	52	30	4.0	0	NA	NA	NA	5	5	4	1.5
I	3	98	94	1.4	25	27	18	3.1	1	94	94	NA	4	6	5	2.1

n, Number of measurements; NA, not applicable.