Imerys operates 120 mining sites(1) and 29 different minerals or mineral groups. The Group draws on its knowledge of their properties and applications to mine, enrich and combine them to deliver the required effects to its customers. From deposit through to customer, find about all the... more

Oglebay Norton produces a variety of industrial minerals, ranging from crushed and graded limestone to value-added materials. Our primary minerals are limestone and industrial sands. Our quarries have extensive resources and the capacity to expand to meet demand.

Southdown is a major building materials company engaged in cement manufacturing and the production of concrete products, construction aggregates and specialty minerals Headquartered in Houston, Texas, the Company employs approximately 3,700 people nationwide. Southdown is the second... more