Colorado Fuel and Iron: Company MinesMain MenuInteractive CF&I Mine MapCF&I Mines Listed AlphabeticallyA List of Mines Organized AlphabeticallyCF&I Mines Listed ChronologicallyA Directory of Mines Opened By DecadeCF&I Mines Listed by StateCF&I Mines by StateCredits and AcknowledgementsCompleted Mine HistoriesChristopher J. Schrecka2fcfe32c1f76dc9d5ebe09475fa72e5633cc36dC.J. Schreck
Total Production (tons): 93,567History The Emerald Mine was opened in 1908 by the Williamsburg Slope Coal Company on land leased by the AT & SF Railroad. CF&I took over operation of the Mine December 1, 1919 after purchasing the equipment. Prior to its sale the mine produced 171,678 tons of coal. Production under CF&I was relatively small producing between 1,000 to 1,500 tons per month. CF&I invested $66,398.42 throughout the life of the mine. However unlike many CF&I mines there was no company town or store at the property.