On completion of the dam in 1922, and with only maintenance work being needed for the dams, a Muir Hill-Fordson petrol-paraffin rail tractor was acquired, the Bagnall was taken away by McAlpine for use on the construction of the Welsh Highland Railway, and Eigiau was put up for sale, eventually moving to Penrhyn Quarry in 1928.
In 1922 after the dam's completion, only maintenance work was required. A Muir Hill-Fordson petrol-paraffin rail tractor was acquired, the Bagnall was transported by McAlpine for use on the Welsh Highland Railway construction, and Eigiau was put up for sale before moving to Penrhyn Quarry in 1928.