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CoorsTek
CoorsTek, Inc. is a privately owned manufacturer of technical ceramics for aerospace, automotive, chemical, electronics, medical, metallurgical, oil and gas, semiconductor and many other industries. CoorsTek headquarters and primary factories are located in Golden, Colorado, US. The company is wholly owned by Keystone Holdings LLC, a trust of the Coors family. John K. Coors, a great-grandson of founder and brewing magnate Adolph Coors Sr., and the fifth and youngest son of longtime chairman and president Joseph Coors, retired as president and chairman in January 2020 after 22 years.
Prussian-born Adolph Coors (1847–1929) opened the Colorado Glass Works in 1887 with fellow German immigrant Joachim Binder and James R. Ward to manufacture beer bottles for his brewery, the Adolph Coors Brewing Company, west of Denver. In 1888, the glass works, incorporated as Coors, Binder & Co., was idled by a strike and never reopened. The remaining building of the Glass Works by 1910, its warehouse, was leased to Austrian-born John J. Herold (1871–1923) and incorporated as the Herold China and Pottery Company situated upon the site at 600 Ninth Street in Golden. Herold used clay from nearby mines to make tableware and heat-resistant ovenware under the trademark Herold Fireproof China, with major financial support from Coors.
The now-abandoned clay pits form the western boundary of the Colorado School of Mines (CSM) campus. CSM professor Herman Fleck helped Herold perfect his glazing technique. Adolph Coors became the majority stockholder and was elected to the board of directors of Herold China in 1912.
John Herold resigned in 1912 due to tuberculosis and other health concerns, and Adolph Coors Company acquired Herold China in 1914. Herold returned later in 1914 to manage the plant, but left permanently in 1915 for the Guernsey Earthenware Co. in Cambridge, Ohio. Adolph Coors II (1884–1970) was the first vice-president (VP) and general manager (GM). CSM evaluated Fireproof China for industrial applications in 1914, and found it suitable.
The company began producing chemical porcelain in 1915 as a result of a World War I embargo on German imports. Adolph Coors' third son, Herman F. Coors (1890–1967), was named manager in 1916, during which year the plant's iconic brick face upon Ford Street was built. Employment increased from 37 employees in 1915 to 75 in 1917. The plant became the largest employer of women in Golden, with Herman Coors advertising specifically for female employees in the Golden Transcript. Herold China was renamed Coors Porcelain Company in 1920, and the trademark "Coors U.S.A." was first used. The Rocky Mountain Bottle Company, maker of Coors beer bottles in nearby Wheat Ridge and a joint venture with Owens-Brockway Glass Container Inc., came long after Coors, Binder & Co., and has never been affiliated with Coors Porcelain.
After World War I, Coors Porcelain made tableware and cookware bearing the trademarks Rosebud, Glencoe Thermo-Porcelain, Coorado, Mello-Tone and others. During Prohibition, the ceramic business was largely what kept the parent company afloat.
The original factory site at 600 Ninth Street in Golden was the only Coors Porcelain facility until the 1970s, and remained the company headquarters until a new facility was built northeast of Golden in the early 1990s. The 440,000 sq ft (41,000 m2) Ninth St. plant consists of several adjoining buildings that occupy four square blocks, and was CoorsTek's largest manufacturing site until it closed in 2021.
Herman Frederick Coors managed the company in the early days. Herman's older brother, Grover Cleveland Coors (1888–1954), began the fledgling company's foray into ceramic technology by inventing a tool for forming spark plug insulation in 1919. Chemist Harold W. Ryland (1881–1966) was hired in 1923, and worked his way up to GM and VP of Porcelain and mayor of Golden 1939–45 before his 1957 retirement. Germany became competitive once again in 1926, and put downward pressure on Coors' chemical porcelain business. Adolph I's death in 1929 put Adolph II solely in charge of the idled A. Coors Co. brewery and Porcelain both, until his sons Adolph III, Bill and Joe joined in the 1940s.
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CoorsTek
CoorsTek, Inc. is a privately owned manufacturer of technical ceramics for aerospace, automotive, chemical, electronics, medical, metallurgical, oil and gas, semiconductor and many other industries. CoorsTek headquarters and primary factories are located in Golden, Colorado, US. The company is wholly owned by Keystone Holdings LLC, a trust of the Coors family. John K. Coors, a great-grandson of founder and brewing magnate Adolph Coors Sr., and the fifth and youngest son of longtime chairman and president Joseph Coors, retired as president and chairman in January 2020 after 22 years.
Prussian-born Adolph Coors (1847–1929) opened the Colorado Glass Works in 1887 with fellow German immigrant Joachim Binder and James R. Ward to manufacture beer bottles for his brewery, the Adolph Coors Brewing Company, west of Denver. In 1888, the glass works, incorporated as Coors, Binder & Co., was idled by a strike and never reopened. The remaining building of the Glass Works by 1910, its warehouse, was leased to Austrian-born John J. Herold (1871–1923) and incorporated as the Herold China and Pottery Company situated upon the site at 600 Ninth Street in Golden. Herold used clay from nearby mines to make tableware and heat-resistant ovenware under the trademark Herold Fireproof China, with major financial support from Coors.
The now-abandoned clay pits form the western boundary of the Colorado School of Mines (CSM) campus. CSM professor Herman Fleck helped Herold perfect his glazing technique. Adolph Coors became the majority stockholder and was elected to the board of directors of Herold China in 1912.
John Herold resigned in 1912 due to tuberculosis and other health concerns, and Adolph Coors Company acquired Herold China in 1914. Herold returned later in 1914 to manage the plant, but left permanently in 1915 for the Guernsey Earthenware Co. in Cambridge, Ohio. Adolph Coors II (1884–1970) was the first vice-president (VP) and general manager (GM). CSM evaluated Fireproof China for industrial applications in 1914, and found it suitable.
The company began producing chemical porcelain in 1915 as a result of a World War I embargo on German imports. Adolph Coors' third son, Herman F. Coors (1890–1967), was named manager in 1916, during which year the plant's iconic brick face upon Ford Street was built. Employment increased from 37 employees in 1915 to 75 in 1917. The plant became the largest employer of women in Golden, with Herman Coors advertising specifically for female employees in the Golden Transcript. Herold China was renamed Coors Porcelain Company in 1920, and the trademark "Coors U.S.A." was first used. The Rocky Mountain Bottle Company, maker of Coors beer bottles in nearby Wheat Ridge and a joint venture with Owens-Brockway Glass Container Inc., came long after Coors, Binder & Co., and has never been affiliated with Coors Porcelain.
After World War I, Coors Porcelain made tableware and cookware bearing the trademarks Rosebud, Glencoe Thermo-Porcelain, Coorado, Mello-Tone and others. During Prohibition, the ceramic business was largely what kept the parent company afloat.
The original factory site at 600 Ninth Street in Golden was the only Coors Porcelain facility until the 1970s, and remained the company headquarters until a new facility was built northeast of Golden in the early 1990s. The 440,000 sq ft (41,000 m2) Ninth St. plant consists of several adjoining buildings that occupy four square blocks, and was CoorsTek's largest manufacturing site until it closed in 2021.
Herman Frederick Coors managed the company in the early days. Herman's older brother, Grover Cleveland Coors (1888–1954), began the fledgling company's foray into ceramic technology by inventing a tool for forming spark plug insulation in 1919. Chemist Harold W. Ryland (1881–1966) was hired in 1923, and worked his way up to GM and VP of Porcelain and mayor of Golden 1939–45 before his 1957 retirement. Germany became competitive once again in 1926, and put downward pressure on Coors' chemical porcelain business. Adolph I's death in 1929 put Adolph II solely in charge of the idled A. Coors Co. brewery and Porcelain both, until his sons Adolph III, Bill and Joe joined in the 1940s.