is an essential ingredient of concrete, being mixed with water,
sand and cement to give an excellent artificial building material.
A large amount of the current Broad Oak Nature Reserve soon ended
up all over East Kent, from Manston Airfield to Kent County Cricket
Ground and the Thanet Way to the sea defences at Dover.
the early days extraction of concrete was carried out by manual
labour, picks and shovels, with assistance from steam and deisel
powered cranes, lorries and drag lines. Photographs taken of the
Robert Brett and Son's Riverdale Road Quarry during the 1930's,
illustrate the nature of the workings. The Broad Oak Nature Reserve
quarry was part of this complex, with extracted gravel transported
by bridge across the Great Stour to the washing and storage facilities
shown in the photographs.