The pit was excavated through layers of Drybrook Sandstone and Whitehead Limestone until reaching the Crease Limestone at a depth of 180 feet. Workings extended about 100 yards northwest of the pit and approximately 300 yards southeast along the strike. Additionally, they extended southwards towards Scowles, where they connected with another shaft located 300 yards directly south of the main one. The pit was filled in as recently as 1973.