History
There are also the remnants of limekilns. There are total 4 limekilns in Hoi Ha Wan but only 2 remain comparatively intact. They are located on the eastern shore of inner Hoi Ha Wan. Limekiln industry was one of the oldest industries (1800–1939) in Hong Kong, which refined lime from either oyster shells or coral skeletons for construction and agricultural uses. In the processes, limestone, i.e. calcium carbonate, in the shells and corals would be transformed into calcium oxide by means of heating.
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