This course is designed to assist you in meeting Mining Safety and Health Administration (MSHA) Part 46 annual refresher requirements; specifically under 46.4 (d). Part 46 applies to shell dredging, sand, gravel, surface stone, surface clay, colloidal phosphate, and surface limestone mines.? Note that while this course covers the majority of subjects recommended for the refresher training, you must also fulfill some of the training requirements outside the scope of this course. For example, the regulations (46.8(b)) require a review of your site-specific hazards.