Progressive Contracting of St. George wants to extract pozzolan, an additive for concrete, in an area of Modena Valley known as Nelson Canyon. Residents say the 9-mile dirt road can’t sustain ...
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Pompeii's Ongoing Excavations Reveal Innovative Roman Building MethodsEvidence suggests a technique involving the hot mixing of quicklime and pozzolan before hydration. Remnants of this pre-mixed material scattered throughout the domus underscore the advanced nature ...
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