Due to the planned changes to the Polish legal and normative for crystalline silica, the paper presents some problems related to the conduct of risk assessment for this factor in the work environment of rock mining. Presented Polish regulations regarding crystalline silica are quite different from those generally accepted and recognized by the international and European organizations and by most EU countries. Based on the analysis of the monitoring results of harmful agents in the field of rock material the levels of risk of crystalline silica were determined and compared for sample jobs and raw materials groups, with different content of the WKK. It was shown that after the adoption of European standards – increased occupational risk will be significantly diverse for different raw materials groups. A reference to the "best practices" manual NEPSI was made, indicating that they should be implemented also in the Polish rock mining and recognized as the primary determinant in the process of occupational risk assessment and management.