Table 3.

Measurement result data of inhaled dust by workers in three departments by using PDS.

Variable	1st Month (N = 28 worker)	4st Month (N = 28 worker)	7st Month (N = 28 worker)	10st Month (N = 28 worker)	p-Values
Dust inhaled by workers in Process Cement department (mg/m3)	33.8 ± 6.4	32.9 ± 5.9	29.5 ± 8.5	31.3 ± 2.1	0.25
Dust inhaled by workers in Loam department (mg/m3)	40.5 ± 7.1	39.4 ± 4.0	41.2 ± 2.2	42.2 ± 6.9	0.43
Dust inhaled by workers in Black Sand department (mg/m3)	48.5 ± 4.8	56.3 ± 7.9	50.6 ± 1.6	50.7 ± 3,2	0.57