1930-1937: an illustrated quarterly review of the coal trade published by Gueret, Llewellyn & Merrett Limited, and Welsh Associated Collieries at their head offices, Bute Street, Cardiff. Edited by W H Simmonds. Changed its name to PD and GLM Review in 1936.
1938-1966: now called the PD review to 'give effect to the boarder conception of the group as a whole', issued by Powell Duffryn Associated Collieries Limited/Powell Duffryn Limited