Several lime kilns were built behind Sandymount, pro­ducing burnt limestone for cement manufacture—an en­terprise which continued intermittently up to 1933. Flax milling was another small-scale industry that brought money to the peninsula. William Robertson, who owned land behind Sandfly Bay, built water races around the side of a valley feeding a large reservoir, and ran a 14 ft waterwheel to power a scutching mill. Smaller wheels were constructed near Hoopers Inlet and behind Boulder Beach.