The southern portion of the Tranent Waggonway was rebuilt as a standard gauge railway in the 1880s. A new connection was made to the Tranent Branch (North British Railway) at Meadowmill. Several extensions were made to collieries including those to Tranent Colliery Muirpark Pit and Tranent Colliery Carlaverock Pit. A connection was made to the north end of Fleets Colliery around the 1920s, already served by 'Bog Siding', a branch from the Macmerry Branch (North British Railway) to the south.
This line is divided into a number of portions.
This mine was developed by the National Coal Board close to the East Coast Main Line. It was served by the railway which linked the Tranent Branch (North British Railway) to the Tranent Waggonway the southern portion of which had been converted to a standard gauge railway. Approach was from Prestonpans on the main line.
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