190.1 Production workers in manufacturing establishments - work hours 1982. 207.5 Production workers in manufacturing establishments - work hours 1987. 204.0 Production workers in manufacturing establishments - work hours 1992. Manufacturing Employees and Production Workers are in thousands. Payroll, Wages, Value, Cost, and Expenditures are in millions of dollars.
Work hours are in the millions.
Other data is in absolute numbers. U.S. Census Bureau. Additional notes on the data sources are available. Search USA Counties 1998 via the Internet for Colorado county level data.