As with so many collieries, the men were laid off and the pit was put on "care and maintenance" which meant keeping it free from noxious gases and seeping water so that it could be reopened if the industry picked up.
Potholes are formed by water seeping through cracks in the asphalt surface of a road.
It concluded water seeping from the cliff face had most likely leaked from a pipe from the nearby McCain factory.
It is believed the decision relates to concerns that the site is not lined, which means there is a danger of polluted water seeping underground.
BBC: NEWS | UK | Wales | North West Wales | Waste tip faces licence problem
Last year, a complaint to the Buildings Department about rain water seeping into the building triggered an inspection that eventually led to the demolition order.
Water was seeping through the bricks and ruining the mortar, forcing Dodd to work quickly before the wall he'd worked on all morning collapsed.
The goal is to hold them accountable by having them scrutinize their supply chain practices to ensure that no filthy water is seeping into waterways somewhere in the process from chemical to laptop.
Dr Malin and Dr Edgett suggest that the gullies are being created by water that is either seeping slowly to the surface or building up behind barriers of ice and occasionally bursting through.
The all-pervasive sea water still left its mark, seeping into the frames and discoloring them with salt stains and algae.
There was water on the floor 2in deep in places and that was seeping through from floor to floor.
The crippled plant's owner is still trying to manage hundreds of thousands of tons of radioactive water used to cool the reactors, and scientists believe some of that is still seeping into the Pacific.
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