Noise Exposure and Hearing Capabilities of Quarry Workers in Ghana: A Cross-Sectional Study

Table 1

Measured noise levels (in dBA) on selected machines in five quarry companies.

Type of machines	Quarry companies
	A. Kannin	Kas	Taysec	Northern quarry	Siemens
	dBA	dBA	dBA	dBA	dBA
Drilling machine	89.4	96.2	95.0	97.0	94.9
Tyre wrench	87.0	86.3	87.9		88.5
Lathe machine	87.4		86.5
Block making machine	100.3
Generator set	86.5	97.9	87.9	94.3
Crusher machine	99.6	102.5	101.3	100.4	102.7
Primary processing machine	89.9	91.0	98.0	96.8	98.8
Secondary processing machine	88.6	86.7	95.3	88.5	92.0
Excavator machine	97.1	95.6	94.9	89.5	88.6
Air compressor	87.4	86.9	93.2		95.4