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James F. Bailey Assay Office Museum, Boulder, CO

Photo: Matt Golon, CC BY-SA 3.0, via Wikimedia Commons. Cropped and resized.

Museums

James F. Bailey Assay Office Museum

A Boulder County museum in Fourmile Canyon showing mining-era assaying tools, furniture, and artwork.

6352 Fourmile Canyon Dr, Boulder, CO 80302 · Boulder, CO

About James F. Bailey Assay Office Museum

Located west of Boulder in Fourmile Canyon, this museum displays many tools used in the assaying process, along with furniture and artwork owned by the Bailey family. It preserves the story of hard rock mining in Boulder County, when prospectors brought ore samples to an assay office to learn whether their finds were valuable. Visits are scheduled around the monthly opening days.

  • #mining history
  • #assay
  • #free admission
  • #Boulder County
  • #Fourmile Canyon

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