Graig Colliery is possibly the mine opened by John Bird in the period 1859-63. It is shown as Graig Colliery & Brickworks on the 1st ed county OS map as a scattered group of coal workings linked by tramways. The brickworks, which must have occupied the N end of the complex, is no longer extant since the ground to the N of the complex has been landscaped.

The complex includes archaeological evidence of a drift mine (nprn 507389), coal levels with related buildings (nprn 507381, 507383, 507390, 507391, 507392, 507394), tips (nprn 507382, 507396), tramways and inclines (nprn 507384, 507388, 507397, 507400), air shaft (nprn 507395), reservoir (nprn 507401) and an unexplained large pit (nprn 507391).

See Cynon Valley Historical Society, Cynon Coal, 2001, appendix A, 'John Bird Colliery'. (The colliery should not be confused with Old Graig Colliery.)
Recorded as part of Uplands Initiative Survey. R Hayman, H&H, 16/11/2009.