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Twelve quarries were developed near Sleeps Hill in two separate beds of Quartzite which were found on two sides of a steep valley overlooking Adelaide. The quarries were opened in 1916 and taken over by Adelaide Quarries Ltd in 1919. During the 1920's, the quarries were the leading producers of crushed rock in South Australia and employed up to 100 men. The rock was used as aggregate and sand for a variety of construction purposes. After 1930, the 'Depression' seriously curtailed operations, and quarrying ceased altogether in about 1950.</div>
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State Government Photographer</div>
The History Trust of South Australian,  South Australian Government <br> Photo <a rel="nofollow" class="external autonumber" href="http://data.history.sa.gov.au/sagpc/media/preview/7114?maxsize=1000">[1]</a> <br> Object record <a rel="nofollow" class="external autonumber" href="http://data.history.sa.gov.au/sagpc/getitem/7114">[2]</a>