OwenT
Hero Member
I was just thinking it would be interesting to know approximately how many miles of mine working there are or have been dug at least in the US. Especially to compare it to the number of miles of roads or railroads constructed during the the same time period in the 1800s - early 1900s. I think the comparison would be surprising. I seem to remember reading plaques in displays about some mines saying that they had hundreds of miles of workings! I did a quick google search but I didn’t really see any estimates on how much there might be. Anyone have even a guess?
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