In 2003, Graymont became a part owner of Grupo Calidra. Founded in 1907, Grupo Calidra is the largest lime producer in Mexico, with multiple production sites in Mexico and Honduras.
The company, like Graymont, is privately held and has more than 90 years of continuous experience in the lime and limestone industries. Calidra mines some of the highest quality limestone deposits in Latin America.
Calidra produces construction hydrated lime, quicklime, dolomitic lime, chemical hydrated lime and calcium-carbonate products under different brand names, including the leading brands Calidra and Piracal.
Calidra exports high-quality hydrate for specialized industrial applications such as lubrication additives and for use in the food industry. See Graymont Product list for Lubricant Additive Hydrate and Food Grade Hydrate.