Trucks load up with concrete mix at the Concrete Supply facility on Metromont Rd. in north Charlotte in this file photo. The silo on the left contains fly ash, an ingredient of concrete.
Trucks load up with concrete mix at the Concrete Supply facility on Metromont Rd. in north Charlotte in this file photo. The silo on the left contains fly ash, an ingredient of concrete. JEFF WILLHELM jwillhelm@charlotteobserver.com
Trucks load up with concrete mix at the Concrete Supply facility on Metromont Rd. in north Charlotte in this file photo. The silo on the left contains fly ash, an ingredient of concrete. JEFF WILLHELM jwillhelm@charlotteobserver.com

Concrete makers look to import coal ash

March 31, 2016 05:22 PM

UPDATED March 31, 2016 05:52 PM

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