"Rock Drill" comprises a plaster figure perched on top of an actual rock drill. They were offered the designs of a new rock drill by a James McCulloch. Harvey re-joined the group for 1978's "Rock Drill". Comparisons have been drawn between the character's appearance and Jacob Epstein's sculpture "Rock Drill". The tunnel was built using the Burleigh Rock Drill, designed and built in Fitchburg. It became known as the "Cornish Rock Drill", and achieved great commercial success. Alex Harvey found this statue deeply moving and it influenced the entire "Rock Drill Suite". The Burleigh Rock Drill, one of the first pneumatic drills, was used in its construction.