Grace's Guide

British Industrial History

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 138,167 pages of information and 223,196 images on early companies, their products and the people who designed and built them.

D. R. Llewellyn and Sons

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of Dyllas Colliery, Aberdare

1930 Amalgamated with other collieries to form Welsh Associated Collieries

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