 MediaNews Group purchased the Denver Post in 1987 ; the company is based in Denver . The Gates Corporation , the world 's largest producer of automotive belts and hoses , was established in S. Denver in 1919 . Russell Stover Candies Inc. made its first chocolate candy in Denver in 1923 , but moved to Kansas City in 1969 . The Wright & McGill Company has been making its Eagle Claw brand of fishing gear in NE Denver since 1925 . The original Frontier Airlines began operations at Denver 's old Stapleton International Airport in 1950 . Frontier was reincarnated at DIA in 1994 . Scott 's Liquid Gold , Inc . , has been making furniture polish in Denver since 1954 . Village Inn restaurants began as a single pancake house in Denver in 1958 . Big O Tires , LLC , of Centennial opened its first franchise in 1962 in Denver . The Shane Company sold its first diamond jewelry in 1971 in Denver . Johns Manville Corp. , a manufacturer of insulation and roofing products , relocated its headquarters to Denver from New York in 1972 . CH2M HILL Inc . , an engineering and construction firm , relocated from Oregon to the Denver Technological Center in 1980 . The Ball Corporation sold its glass business in Indiana in the 1990s and moved to suburban Broomfield . Ball has several operations in greater Denver . 
