Trace metals in fly ash lead to questions about agricultural applications

Fly ash, a byproduct of coal-fired power generation known to contain toxic heavy metals, is often used as an energy saver in concrete, reducing emissions significantly in building production. But little regulatory attention has been paid to farmers’ use of the ash to stabilize soil and increase yields. Research suggests that crops grown in the soils can absorb the heavy metals, but debate continues. Full story: The Minnesota Independent