It has 17 gypsum board plants in the US and presents itself as a fully integrated building products manufacturer.
[1] It is a private company, incorporated as New NGC, Inc. in 1993 after previously filing for Chapter 11 bankruptcy in 1990.
[2] In 1995, Clemmie Spangler took over National Gypsum for $1.2 billion, through Delcor Inc., a private investment company controlled by him.
[3][4] It is one of the six producers which hold approximately 81% of the worldwide wallboard market (Georgia Pacific, Knauf, Continental Building Products, National Gypsum, Saint-Gobain, and Yoshino Gypsum Co., Ltd)[5] Subsidiary National Gypsum (Canada) Ltd. operates the largest open-pit gypsum mine in the world in Milford Station, Nova Scotia.
The company was founded in 1925 by Melvin H. Baker, Joseph F. Haggerty, and Clarence E.