The mine was located next to a quarry which worked the sandstone above the coal.

Today, the accessible level is a narrow passage roughly 4 feet high and 4 feet wide along most of its length. After about 600 yards, it splits into three separate routes, all of which are very low—only around 2 feet high—and composed of loose material, with occasional reports of poor air quality. Water flows from the left-hand passage and quickly disappears into a gulley near the entrance.

This level was driven in 1809 by Thomas Halford and David Mushett who later purchased the upper level to form Bixlade colliery. They both worked the High Delf seam and the lower level produced over 9000 tons a year, much of which was used to make lime.

After reaching the High Delf seam, roadways were driven north and south in a layout similar to that of the Union Pit. At its peak in 1841, the level produced an impressive 96,000 tons of coal, but it had fallen out of use by 1878. In the years since, various Free Miners have reopened the site through new entrances to extract coal left in substantial pillars.

In 1920 the mine employed 20.