LEXINGTON, SC / ACCESSWIRE / March 21, 2023 / The SEFA Group is pleased to announce major milestones in the thermal beneficiation of coal ash, converting the material for encapsulated uses as ...
SEFA, a technology leader in converting coal ash for recycled use in concrete, was acquired by Heidelberg Materials in May of 2023. While the SEFA name will continue to be associated with ...
A distant train whistle blows through a broad and ominous unknown. Something scratches the walls, scraping the ramshackle boundaries around hearing. Over the loose floorboards, a plucked bass sings, ...
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