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Graham's Navigation (No.9), Tredegar.
Originally called "Edward Jame's First Class Pit" after the man in charge of the shaft sinking. The Sirhowy Company sunk this pit in 1843, later called No.9.
It was renamed "Graham's Navigation Colliery" after its new owner T. C. Graham (a Wales International Rugby player during World War 1).
In 1908 there were 217 men employed at Graham's No. 9 and at Graham's Navigation level there were 29 employed.
By 1918 there were 400 employed at No. 9 pit and 205 at the level.
From a report 1923, there were 444 men employed at No. 9 pit, producing Steam coal from the Yard, Gwarycae and Engine seams. At the level there were 295 men working the Three Quarter and Big Vein seams.
Closed around 1925.