I am sure Paul Sowan will not object to me quoting (and abridging) significant parts of his article here:
Early in the 20th century there was, briefly, a small-scale whiting works at the west end of The Clears, taking Chalk as raw material from two small pits on Colley Hill. Whitings Cottage (The Whitings) stands as a reminder of this vanished local industry, which appears to have run alongside the somewhat more flourishing hearthstone mine and works operated by George Taylor and later by his son William Frederick Taylor.
George Taylor had a well sunk nearby at Clears Shaw by Messrs. Isler and Company in 1909 which, at 260 feet, tapped water from the Folkestone Sands. Kelly’s 1911 Surrey Directory lists Reigate Mines Ltd of The Clears, as owners of a chalk quarry, with one Walter Faro as manager.
About halfway up the steeply sloping side of Colley Hill are two pits, a smaller one immediately above a larger one. Below the lower pit is a substantial spoil tip with a narrow flat top suggesting it may at some time have been equipped with a short narrow gauge railway track. The pits and spoil tip are shewn on the 1874 and 1897 OS six-inch maps as well established before there was a whiting manufactory below at The Clears.
Local oral history evidences the use of a simple mechanised hoist on an inclined plane to take chalk to the bottom of the hill… I was told by Albert William Joy one of the hearthstone miners that the incline plane was, despite instructions to the contrary, used by some of the hearthstone miners to get up or down Colley Hill.
The whiting works are not shown on the 1897 map, only Clears Farm existing at this location at the date of the survey (1894-95). The works was also known in 1908 as a ‘whitening factory’, the local fire brigade attending a conflagration there on 18 June that year. … the factory … contained furnaces used for drying the whitening. One such furnace overheated, and set fire to creosoted timbers forming part of the structure of the building. The iron sheet roof fell in, but the four brick walls were left standing. A large gas engine and a putty mill were saved. The engine presumably was to drive the necessary grinding mills, as the chalk had to be ‘perfectly white, low density, and of great fineness’. The works would have had large tanks in which ground chalk and water could be mixed, only the smallest and lightest chalk being taken off by elutriation for the whiting.
A trade label issued by ‘Taylor Brothers’ advertises their distemper, which, it was claimed, ‘makes distempering a pleasure … only hot water required … entirely free from any smell …’
The pits and spoil tips appear to have been created in connection with earlier lime-burning operations.
One account tells how the conversion of the whiting works to private housing commenced in 1946. … Mr. King (a builder) filled one or more tanks at the works with ‘bomb rubble’ during World War II.