1. Typical methods for extraction included drift mining and bell pits . 2. Bell pits often flooded due to a lack of a drainage system.3. Bell pits were common in the 17th and 18th century.4. It was a site of early mining, using a system known as Bell Pits . 5. The remains of bell pits can sometimes be identified by depressions left when they collapsed. 6. Bell pits were not very effective for mining as they did only partially exploit the resources.7. The 10th Earl had sunk bell pits in Kyleshill Street in Saltcoats in 1759-60. 8. In the 17th century Bell pit mining took place in the south east corner of Hollinhurst Wood. 9. Only small amounts of coal could be obtained by these methods and bell pits were also dug. 10. The early pits were adits where coal outcropped or bell pits where coal was close to the surface.
