This study aimed at determine the health hazards among ceramics workers exposed to.different environmental risk factors including silica and radon dusts and also, to assess exposure.response relationship between intensity of exposure and the degree of health impairment. This study included 150 male exposed ceramics workers and 80 male individuals as controls. The subjects were subjected to questionnaire sheet; clinical examination; plain chest X-ray, ventilatory function tests and. detection of silica in urine. The environmental studies included measuring of respirable dust, total dust.and percent of silica content. Samples from the raw materials used (talc, clay, kaolin, limestone, and.feldspar) were collected and tested for activity concentration of.238U - series,232Th - series and 40K. Theresults of this study revealed that all the respiratory tract symptoms (cough, sputum production,.dyspnea and wheezes) were more frequent among the exposed workers than the control group however,.the differences were not statistically significant, except for wheezes which was statistically significant.The results of ventilatory function tests revealed that there were no statistical significant differences.between the two groups as regards FEV.1% And FEV1/ FVC% while FVC and VC parameters were.statistically significant lower among the exposed workers than the control group. The results ofenvironmental monitoring revealed that the mean percentage of the free silica was (5.2% ± 1.01) and.radon progeny level was (5.67 ± 1.97 Pci / L). These levels were found to be higher than the Egyptian.permissible limits. Tests of Radium (226 Ra) series, Thorium (232 Th) series and Potassium (40 K) in some raw materials used in ceramics industry showed that Feldspar represented the highest levels of. 226 Ra,232 Th, 40 K compared with the other raw materials. Also, the results revealed that abnormal changes in. chest x-rays and decline in ventilatory functions were statistically significant among workers exposed.to free silica (more than 5%) and to radon progeny level (more than 4 Pci / L) than those exposed to free. silica (less than 5%) and to radon progeny level