Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Coal cleaning plant, photograph
Black and white photograph showing clean coal being graded according to size.
This photograph shows the cleaned coal passes on to vibrating screens, which, by reason of their progressively wider perforations, classify the coal-fragments according to size, and deliver on to separate conveying belts, coal of the various sizes that the plant is designed to recognise.
Pwnc
Diwydiant
Rhif yr Eitem
38.190/3
Mesuriadau
Meithder
(mm): 237
Lled
(mm): 287
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