Purbeck Stone, a valuable type of limestone, was extracted from the Tilly Whim caves. Using only metal punches, wedges and hammers to split the rock into workable blocks, the quarrymen mined the stone horizontally out of the cliff face. The quarrymen were also skilled stonemasons.
The extraction of Purbeck Stone limestone from the Tilly Whim caves was accomplished using manual tools such as metal punches, wedges, and hammers to break it down into workable blocks. The quarrymen's expertise extended beyond extracting the stone to include its horizontal removal from the cliff face, a skill also possessed by skilled stonemasons.