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Old Hartley Colliery, Seaton Valley

Old Hartley, Seaton Valley

55.074969, -1.472511

Old Engine Pit


Last Updated:

5 Sept 2021


Delaval Family

HER Info

This is the site of a colliery called the Old Engine owned and operated by the Delaval family. It may have been a small bell pit form of mining that was practised here - it was dug or 'sunk' to the coal levels called 'seams' before 1761. The exact dates this site worked are unknown. It was linked to the Seaton Sluice harbour by a wagonway which also carried the coal for a number of other mining sites which are now to be found across the county boundary.

'Sketches of The Coal Mines in Northumberland and Durham' T.H.Hair, published in 1844

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