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Andrew Kay & Company (Curling Stones) Limited
Industry	Manufacturing
Founded	1851; 174 years ago in Mauchline, East Ayrshire, Scotland
Founders	William Kay; Andrew Kay; Thomas Kay;
Headquarters	Mauchline
Products	Curling stones
Services	Manufacture and servicing of curling stones
Owner	James Wyllie
Website	kayscurling.com

Andrew Kay & Company (Curling Stones) Limited,^[1] trading as Kays Scotland, is the only remaining UK manufacturer and supplier of curling stones. Founded in 1851, it retains exclusive rights to harvest granite from Ailsa Craig, granted by the Marquess of Ailsa. Kays of Scotland produces the only stones used in competition by the World Curling Federation and is the sole supplier of curling stones to the Winter Olympic Games.^[2]^[3]^[4]^[5]

History

Prior to the foundation of Kays of Scotland, there was little regulation to the sport of curling and stones of any shape or size were used. Through a process of elimination, stones from Ailsa Craig were found to be highly resistant to splintering, making them desirable for this purpose.^[6]^[7]

In 1851, William Kay and sons Andrew and Thomas created Kays of Mauchline, a workshop in Haugh, East Ayrshire, Scotland and later received permission from the family who owned the island of Ailsa Craig to harvest granite for the manufacture of curling stones.^[7]

The company eventually found itself under the stewardship of Thomas Kay's wife's brother-in-law, James Wyllie, and has remained a business wholly owned by the Wyllie family. Descendant James "Jimmy" Wyllie currently owns the company.^[8]^[9]^[10]^[11]

In 1911, Kays of Scotland moved their operation 2 kilometres (1.2 mi) north from their original water-powered mill at the bank of the River Ayr by Mauchline.^[12]

A shipment of 278 Kays Excelsior Ailsa curling stones destined for three curling clubs in Canada was among the cargo of the SS Athenia passenger liner when a torpedo from a German submarine sank her in the Western Approaches on 3 September 1939. This was the first British ship to be sunk by Germany during World War II.^[13]

Kays of Scotland have supplied curling stones to every Winter Olympic Games since Chamonix in 1924, with the exception of the 2002 event in Salt Lake City.^[12]^[14]

Manufacture of curling stones

For the main body of each curling stone Kays uses Ailsa Craig Common Green granite. Kays inserts Ailsa Craig Blue Hone granite "Ailserts" as the running surface of the stone.^[12]

Due to its status as a wildlife reserve by the Royal Society for the Protection of Birds, blasting and quarrying at Ailsa Craig is restricted. In 2002, Kays of Scotland was permitted to collect 1,500 tons of granite already displaced on the island. Its next collection of granite from the island was in 2013, harvesting 2,000 tons, expected to yield 10,000 curling stones.^[15]^[16]

The Kays workshop employs six craftsmen and produces five stones a day.^[3]