| http://www.w3.org/ns/prov#value | - Our quartz, feldspar, nepheline syenite, olivine, calcium carbonate, clay, kaolin, lime and limestone products are the essential raw materials of nearly every manufacturing process.For our customers, employees, neighbors and other stakeholders, Unimin ??? more... stands for leadership, continuity and commitment..... now and in the future. ??? less
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