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Valued Partnerships

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A new company with a rich legacy
Built through the merging of two leading organizations, Covia is a leading provider of minerals and material solutions for the Industrial and Energy markets.


122 Years of Quality Green Sand Casting, Die Casting, and Concrete Casting Products.
The Hill and Griffith Company was founded in 1896 in Birmingham, Alabama, by John Hill and Tom Griffith. Since this beginning, Hill and Griffith has grown to support the growth of the metal casting and concrete casting industries of North America.
Hill and Griffith is and continues to be recognized as a leading quality supplier to industry. In fact, John Hill stated, "Hill and Griffith believes the integrity of the company is represented in the quality and value of the people, products and services bearing our name." This approach has resulted in Hill and Griffith being recognized with quality awards and certified supplier approvals.

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Riser Sleeves, Filters, & Fiber ladles

Joy-Mark, Inc. and affiliated companies produce a comprehensive range of foundry and specialty products made to achieve optimal performance with cost saving results. With solutions for foundry, metal handling, heat treating, refractory insulation, ceramics, concrete and more, we are ready to service your needs. Contact us today to review our standard products and our abilities to customize solutions for your unique applications.

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Crucibles and Thermocouples

The cornerstone for the manufacture of MAMMUT-Crucibles was the granting of a patent on the production of crucibles in the year 1875. Since then, MAMMUT has developed into a global approved supplier and manufacturer of crucibles due to innovation and improvement of material properties as well as integration of modern press modes.


Our goal, from day one, has been to provide the best possible blend of innovative ideas and proven designs in the equipment we offer. Instead of striving to be lowest-cost supplier, we believe that incorporating affordable, relevant technology and providing superb customer support is a better value for you, our customer.


Saint-Gobain leads the industry in the design, development and production of the highest performing solutions for extreme operating conditions and high temperature environments. Every product and material is designed to maximize performance and longevity while minimizing long-term environmental impact. This commitment to sustainability is the cornerstone of every Saint-Gobain division.


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