Area of the study:
This study was carried out in the quarry industry located at Umuoghara in Ezza North Local Government Area of Ebonyi State, Nigeria. There are about 50 plants in the company all located within one premise. There are about 800 workers all together in the company according to the register from the administrative officer.
Inclusion Criteria :
Male and female workers working in the quarry industries in Ebonyi state at the time of this study. Workers involved in the stone processing such as the blasters, operators of crushers, lorry drivers, manual stone handlers and loaders. Workers who have worked for at least one year in the quarry company were considered for inclusion.