Question: In 1979, which company did this American billionaire businessman born in 1954 establish?

Context paragraphs:
Richard Yuengling Jr.: Richard L. Yuengling Jr. (born 1943) is an American billionaire businessman, the president and sole owner of the Pottsville, Pennsylvania brewer, Yuengling.  He is the fifth generation of the family to run Yuengling, and owns 100% of the company, having bought out his father in 1985.

George Bishop (businessman): George H. Bishop (born 1937) is an American billionaire businessman.  He is the founder and Chief Executive Officer of GeoSouthern Energy, a US oil company.  On the "Forbes" 2016 list of the world's billionaires, he was ranked #722 with a net worth of US$2.4 billion.

Sierra Nevada Brewing Company: Sierra Nevada Brewing Co. was established in 1979 by homebrewers Ken Grossman and Paul Camusi in Chico, California, United States.  Sierra Nevada Brewing is one of the top breweries operating in the United States.  As of 2016, it is the seventh-largest brewing company in the United States.  The brewery produced in 2010.

Charles Butt: Charles Clarence Butt (born February 3, 1938) is an American billionaire businessman, who inherited his family's San Antonio-based H-E-B supermarket chain in 1971.  The privately held company has more than 300 stores and $20 billion in sales, according to "Forbes".

Mark Shoen: Mark V. Shoen (born 1951) is an American billionaire businessman, vice-president of the moving equipment and storage rental company U-Haul, founded by his father, and the largest shareholder in its parent company, Amerco.

Howard Buffett: Howard Homan Buffett (August 13, 1903 – April 30, 1964) was an American businessman, investor, and politician.  He was a four-term Republican United States Representative.  He was the father of Warren Buffett, the famed American billionaire businessman and investor.

Henry Hillman: Henry Lea Hillman (December 25, 1918 – April 14, 2017) was an American billionaire businessman, investor, civic leader, and philanthropist.  He was chairman of The Hillman Company, a family office and investment company headquartered in Pittsburgh, Pennsylvania, and owned by the Hillman family.  He chaired the board of trustees of Hillman Family Foundations.  which manages 18 named foundations.

Ken Grossman: Ken Grossman (born 11 November 1954) is an American billionaire businessman, founder of Sierra Nevada Brewing Company.

Forrest Preston: Forrest Lee Preston (born 1932/33) is an American billionaire businessman.  He is the founder, owner, chairman and chief executive officer (CEO) of Life Care Centers of America, a long-term elderly care company he founded in 1970.

Rick Caruso: Rick Joseph Caruso (born January 7, 1959) is an American billionaire businessman and philanthropist.  He is the founder and chief executive officer of Caruso Affiliated, an American real-estate company.  He has been president of the Los Angeles Police Commission and a member of the Board of Water and Power Commissioners.

Supporting paragraphs: Ken Grossman Sierra Nevada Brewing Company
Answer: Sierra Nevada Brewing Company