Old Leyden Mine

Past ProducerCoal, UraniumUSGS MRDS

Location

StateColorado
CountyJefferson
Coordinates39.84999, -105.23114

Commodities

PrimaryCoal, Uranium

Mine Details

StatusPast Producer
First Production1950
Last Production1956
Discovery Year1874
Data SourceUSGS MRDS
Source ID10013508

What This Means

This mine is a past producer — it was once operational but is no longer actively mining. Past producer sites may still have environmental impacts including disturbed land, tailings piles, and potential water quality effects. Some past producer sites have been reclaimed, while others remain as-is. Check with your state mining or environmental agency for current site conditions.

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