RNAD Broughton Moor RNAD Broughton Moor is a decommissioned Royal Naval Armaments Depot located between Great Broughton and Broughton Moor in the County of Cumbria , England . History . The site was connected to the main line via a branch line to Siddick Junction , north of Workington railway station . The branch closed on 4 June 1992 , being the last part of the Cleator and Workington Junction Railway in operation . The site was decommissioned in 1992 at the end of the Cold War . The United States Navy used the site for storage of its armaments for its North Atlantic Squadron . The site had a gauge railway . Locomotives from this railway are preserved on the Almond Valley and Whipsnade railways . The weapons were taken by rail out of the site to Workington . The large majority of the buildings and bunkers remain along with underground storage and an extensive network of storage sheds and other military buildings . Ownership of the site was transferred from the Ministry of Defence to Allerdale Borough Council in 2008 who have yet to decide what to do with the site . The site was purchased by the Borough Council for £1 . In October 2008 Cumbria County Council called for interest in the redevelopment of the site rebranded as Derwent Forest . As yet there has been little interest due to the huge cost involved with cleaning up the site . 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 . Furthermore , having previously ruled out allowing the site to be used for coal mining , Allerdale council later agreed to allow mining by any prospective future owners as a way to raise funding for any potential tourism development . It was announced on 13 January 2011 that the two shortlisted developers for the site would not mine the site , allaying fears about the environmental impact of the development of the site . A decision is due by the end of February 2011 . Accidents . An explosion occurred at RNAD Broughton Moor on the 18th January 1944 which resulted in the death of 11 people and left 70 people injured . The coroners hearing was reported in the Cumberland Evening Star in February 1944 . The explosion appears to have occurred in one of the traverse laboratories , photos showing the aftermath include a 2 ft 6in gauge box van No . 267 . Sale of Railway Equipment . The railway equipment at RNAD Broughton Moor was sold by tender in April and July 1992 and consisted of approximately 3 miles of standard gauge track and 25 miles of narrow gauge ( 2 ft 6in ) track . The sale also included 4 standard gauge locomotives built by Ruston & Hornsby and Hunslet , 27 narrow gauge locomotives by the same builders and 127 wagons , including 6 box vans , 4 brake vans ( 2 x 4tons & 2 x 6 tons ) and 99 flat wagons . In 1970 the locomotives in use at Broughton Moor consisted of : Navy Department Locomotives 2 - Standard Gauge diesels : 1 x Hunslet 0 - 4 - 0DM . 1 x Ruston & Hornsby 0 - 4 - 0DM Class 165DS . 14 – 2 ft 6in gauge locomotives in use : 2 x Hunslet 0 - 4 - 0DM 25HP 4 x Hunslet 0 - 4 - 0DM 50HP 2 x Ruston & Hornsby 4wDM Class 20DL , ( Nos . R1 / 2 ) . 6 x Ruston & Hornsby 4wDM Class 48DL , ( Nos . R4 / 6 / 7 / 8 / 10 / 12 ) . Ministry of Public Buildings & Works Locomotives 4 – 2 ft 6in gauge locomotives : 2 x Motor Rail 4wDM 2 x Hunslet 4wDM