EIW Sand Plants Have Served Silvi Materials Well Over The Past 25 Years. By Mark S. Kuhar Silvi Materials is a construction-materials supplier with 25 different locations across Pennsylvania and New Jersey. The family-owned business was founded in 1947 by Laurence Silvi to help companies, contractors and homeowners build a better future. Today, with sons John Silvi and Laurence Silvi…
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