Cape Cornwall Mine, a tin mine on the cape, was operated intermittently between 1838 and 1883. The mine's 1864 chimney near the peak of the cape was retained as an aid to navigation. In the early 20th century the former ore dressing floors were for a time converted for use as greenhouses and wineries.
In 1987 the mine site was purchased by the H. J. Heinz Company of the United States (and British plants) and donated to the nation. The remains of Cape Cornwall Mine are designated as part of the Cornwall and West Devon Mining Landscape, a UNESCO World Heritage Site.