In 1893 construction of the Argo tunnel began. It took 17 years to complete the route to Central City, 4.5 miles away. The tunnel provided water drainage, ventilation, and economical transport of the gold bearing ore from the mines. The Argo Mill was built to process the ore. The gold fetched prices from $18 to $35 an ounce.The Mill stands today as a memorial to the hard …
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