Visit the interactive map online, then in the upper right-hand corner check the “Mine Maps Index” box that will bring up purple lines indicating the exact location of the mines underground.

In the Mine Wars that erupted in ... on Guard before her tent. Credit: Coal Age Magazine Women in the early 1900s were barred from working underground in the coalmines, but their work above ...

Underneath the present-day Marshall Mesa trailhead lies one of 14,000 abandoned mines across Colorado. Mining activity ceased at the site in the early 1900’s, but the coal still left in the ...