Heidelberg Materials North America surpasses 8 million t of harvested coal ash processed for beneficial use  World Cement

Heidelberg Materials advances coal ash use  Construction & Demolition Recycling

Heidelberg Materials North America Surpasses 8 Million Tons of Harvested Coal Ash Processed for Beneficial Use  GlobeNewswire

Heidelberg Materials North America Surpasses 8 Million Tons of Harvested Coal Ash Processed for Beneficial Use  The Manila Times

Heidelberg Materials North America Surpasses 8 Million Tons of Harvested Coal Ash Processed for Beneficial Use  GlobeNewswire

Heidelberg Materials North America Surpasses 8 Million Tons of Harvested Coal Ash Processed for Beneficial Use  Yahoo Finance

Heidelberg Materials North America Surpasses 8 Million Tons of Harvested Coal Ash Processed for Beneficial Use  GlobeNewswire

Heidelberg Materials Has Reclaimed 8+ Million Tons of Coal Ash  For Construction Pros

DNR finalizes discharge permit for Ottumwa Generating Station  Iowa Capital Dispatch

EPA mulls postponing coal plant wastewater compliance, changes to Regional Haze Rule  Utility Dive