The mines of the Durham Coalfield once employed 165,000 people at their height.
But the whole of the industry in the area finally disappeared 30 years ago and the Sunderland Echo is today taking a look at 23 collieries which once provided jobs.
From Wearmouth to Wheatley Hill and Silksworth to Seaham, we have them all.
Watch out for more retro tributes to the pits we once relied on - and the people who worked there.
2. Back in time at Blackhall
Here is Blackhall Colliery as it looked on a winter's day in 1947. Its last days were in 1981. | se
4. Lambton Colliery
An undated view of Lambton Colliery which was no more after February 1965. | se
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