When high levels of the trace element molybdenum (mah-LIB-den-um) were discovered in drinking-water wells in southeastern Wisconsin, the region’s numerous coal ash disposal sites seemed to be a likely source of the contamination.
When high levels of the trace element molybdenum (mah-LIB-den-um) were discovered in drinking-water wells in southeastern Wisconsin, the region’s numerous coal ash disposal sites seemed to be a likely source of the contamination.