core bits to the mining industry. The company had a technological breakthrough in the late 1940s when it perfected a tungsten carbide matrix for diamond bits at an oil field in Colorado. The two men also formed Christensen Machine Company, which later became Hughes Christensen, to manufacture precision tools and gauges for military ordnance and radar. In 1957 Christensen Diamond Products opened a manufacturing plant in Celle, West Germany to serve international markets. Eventually, the Christensens' operations became international with manufacturing plants in Canada, France, Germany, and Japan. Death In 1968, he died at his home in Colorado of a heart attack at age 58. References External links 1909 births 1968 deaths People from Pendleton, Oregon American football offensive guards American football offensive tackles Detroit Lions players Portsmouth Spartans players Oregon Ducks football players Players of American football from Oregon