Mine Shaft Capping Bath and Wiltshire
Mine Caps are typically used to prevent access to old, abandoned mines. People, especially the young, like to explore their surroundings but may not fully understand the dangers inherent within, and surrounding, a mine.
Concrete continues to be the preferred method for capping vertical shafts. Considerations can be made in the design to allow for an entrance to the mine, a steel door for people, a slot for bats, a hole for airflow. The slabs thickness can vary from as little as 6 inches to several feet.1/4 inch or thicker steel-plating is also used, on both horizontal and vertical shafts.
These allow for easier customization than concrete, cutting access holes in steel is far easier than building the concrete forms necessary for the same result. This type of cap is used where easy access is a necessity.