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HA International Corporate Office & Bakelite, Louisville, KY Shipping Location: Closed on Dec. 22, 25, 29, 2023, and Jan. 1, 2024.

HA Oregon Sand Plant: Closed on Dec. 21, 22, 25, 28, 29, 2023, and Jan. 1, 2024.

HA Toledo Plant: Closed on Dec. 21, 22, 25, 29, 2023, and Jan. 1, 2024.

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Evolution of Foundry Shell Sand for Today's Foundry

The Shell Sand process or "Croning" process was invented by Dr. Johannes Croning in Hamburg, Germany in 1944. This process is the oldest core and mold making technology that utilizes synthetic resins. Although many additional sand core and molding making technologies have since been introduced, the Shell Sand process is still a very effective core and molding process today.