From the record
“The Piedmont Charcoal Kilns in the ghost town of Piedmont, Wyoming, United States, are a remnant of a once-extensive charcoal-making industry in southwestern Wyoming.”
Wikipedia article Piedmont Charcoal Kilns State Historic Site, CC BY-SA 4.0.
One of 13 National Register listings published here for Uinta County · listed in 1971 · category: Site.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service