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About Us
Harrison Gypsum Company was founded in 1955 as a small family operation to supply gypsum to the family farm and neighbors. Harrison Mine No. 1 was opened near Cement, OK and the orginally the company was named the Cement Gypsum Company. In 1956 the name was changed to Harrison Gypsum Company as it began to grow. Over the years the company developed the mining business by supplying raw gypsum rock to nearby manufacturers of portland cement. As the market area for Harrison Gypsum expanded, gypsum reserves and production capacity were expanded in turn. As the business grew, mining operations were improved through capital investment in modern mining equipment and infrastructure. In 1994 Harrison Gypsum's mine #2 was named by a U.S. Department of the Interior publications as the largest single gypsum mine in the United States. Today the total gypsum reserves of Harrison Gypsum Company is estimated to be in excess of a quarter of a billion tons. (Map of current operations) Although the sophistication of the family operation has grown
over the years, the set of principles that established Harrison
Gypsum as a trusted name in the industry are still in practice
today. Our Quality Harrison Gypsum Company's quality system assures our customers
and stakeholders that every measure is taken to maintain a consistent
and high level of product quality. We test our gypsum even before
it is quarried to ensure that the resultant ore will be suitable
for use by our valued customers. Selective mining techniques enable
a flexible recovery of gypsum from our reserves, while ensuring
that contaminants and substandard rock are discarded or used in
off-spec applications.
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We
take pride in offering flexible responsive service to our customers
while maintaining consistent quality standards that allow us to
produce a premium product. High standards of service and quality
and development of the ability to cost effectively practice selective
mining techniques lead to the establishment of Allied Custom Gypsum
Inc. in 1987. Like its parent company, Allied Custom Gypsum caters
to a select group of markets, offering custom products and a series
of ground gypsum products such as flame retardant fillers, animal
feed additives, agricultural and turf products, and a high purity
food and pharmaceutical grade gypsum. In 2001, Allied Custom Gypsum
and Harrison Gypsum merged into a single company, benefitting
from the operational synergies and increased financial strength
present between the two organizations.