Anaconda Copper Butte Montana Dangerous Poster
Updated August 7, 2026
| Lot number | 1109 |
| Estimate | 100.00 - 150.00 USD |
| Auction | The Richest Hill on Earth - Day 1 |
| Date | August 13, 2026 at 9:59 PM MDT |
| Auction house | Davis Brothers Auction |
| Location | Missoula, Montana |
John J. Powers was a Butte Miner and well known cartoonist who created safety posters for the Bureau of Safety, Anaconda Copper Mining Company. 17" by 22".
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