LefelCollectionDisgrifiadApproximately colour 516 negatives showing Maentwrog Power Station during periods of refurbishment and during the construction of the new dam between 1988-1992. Taken by Ian Sadler of Five Valleys Photography.ArchifISC - Ian Sadler Maentwrog Power Station NegativesDyddiadRhif Archif2022-06-30_3568