RNAD Broughton Moor

From 1977 it was used by the United States Navy for storage of armaments for its North Atlantic Squadron (the weapons were flown out of the site by helicopters shuttling back and forth over a number of days to a USN Cargo Ship lying offshore and away from the town's harbour of Workington); and from 1981 Broughton Moor was formally adopted as a NATO storage site.

The explosion appears to have occurred in one of the traverse laboratories, photos showing the aftermath include a 2 ft 6 in (762 mm) gauge box van No.

In October 2008 Cumbria County Council called for interest in the redevelopment of the site rebranded as Derwent Forest.

There are unexploded ordnance and large amounts of asbestos as well as unmarked mine shafts when it was a colliery prior to World War II.

[7] Work was due to begin in 2020.Planning permission for building houses on the site was rejected by the local council in 2022.