National Gypsum Company is a company based in Charlotte, NC, well known for drywall gypsum boards in the US. It has 21 gypsum board plants in the US and is presenting itself as a fully integrated building products manufacturer. It is a private company, incorporated as New NGC, Inc. in 1993. It is one of the seven producers which hold approximately 81% of
the worldwide wallboard market (Georgia Pacific, Knauf

Knauf

Knauf is an international, family-owned company based in Iphofen, Germany well known for drywall gypsum boards, originally founded in 1932. The company is a producer of building materials and construction systems comprising construction materials for drywall construction, plasterboard, cement...

,
Lafarge

Lafarge

Lafarge is a French industrial company specialising in four major products: cement, construction aggregates, concrete and gypsum wallboard. In 2010 the company was the world's second-largest cement manufacturer by mass shipped behind Holcim.-History:...

, National Gypsum, Saint-Gobain

Saint-Gobain

Saint-Gobain S.A. is a French multinational corporation, founded in 1665 in Paris and headquartered on the outskirts of Paris at La Défense and in Courbevoie. Originally a mirror manufacturer, it now also produces a variety of construction and high-performance materials.The company has its head...

, U.S. Gypsum and Yoshino Gypsum Co., Ltd)

Subsidiary National Gypsum (Canada) Ltd. operates the largest open-pit gypsum mine in the world in Milford Station

Milford Station, Nova Scotia

Milford Station is a Canadian village in Nova Scotia's East Hants municipal district in the Shubenacadie ValleyThe community is home to the largest open-pit gypsum mine in the world.-History:...

 Nova Scotia

Nova Scotia

Nova Scotia is one of Canada's three Maritime provinces and is the most populous province in Atlantic Canada. The name of the province is Latin for "New Scotland," but "Nova Scotia" is the recognized, English-language name of the province. The provincial capital is Halifax. Nova Scotia is the...

. This mine is currently producing approximately 8000 tons of gypsum daily (during full production it is capable of producing over 15,000 tons per day), most of which is moved by rail approximately 30 miles to a ship loading facility at Wright's Cove

Wright's Cove

Wright's Cove is a cove on the Dartmouth side of Bedford Basin in Halifax Harbour Nova Scotia Canada within the Halifax Regional Municipality...

, on the Dartmouth

Dartmouth, Nova Scotia

Dartmouth founded in 1750, is a community and planning area of the Halifax Regional Municipality, Nova Scotia. Located on the eastern shore of Halifax Harbour, Dartmouth has been nicknamed the City of Lakes after the large number of lakes located in the city.On April 1, 1996, the provincial...

 side of Halifax Harbour

Halifax Harbour

Halifax Harbour is a large natural harbour on the Atlantic coast of Nova Scotia, Canada, located in the Halifax Regional Municipality.-Harbour description:The harbour is called Jipugtug by the Mi'kmaq first nation, anglisized as Chebucto...

.

The company has a long history since it was originally founded in 1925 by Melvin H. Baker, Joseph F. Haggerty, and Clarence E. Williams.