The screens 1 - 1937
Caption: "After it is raised to the pit head the coal goes through various processes of classification and cleaning, according to its type. It is first sized by mechanical screening - similar to riddling - into large and small sizes, the larger coal being hand picked. The small, steam-raising coal is cleaned in a washery. The photograph shows pit tubs going up to the screening room."
This photograph is by grahami and was uploaded March 17th 2008. © grahami please do not copy or distribute without prior express permission.
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