Most firms did not carry out risk assessments every two years, as required by law, because government inspections rarely took place, [Southern African Institute for Occupational Hygiene president] Van Vuuren said...[He also] singled out exposure to vanadium, which is used in the stainless steel industry, as the worst case of occupational negligence… [refers to Assmang (jointly owned by Assore, African Rainbow Minerals)]