Stanley Mill in Stroud among 'at risk' heritage sites
A former Gloucestershire woollen mill is one of 10 key industrial sites named on an "at risk" register by English Heritage.
Stanley Mill in Kings Stanley, near Stroud, built in 1813, is in a "poor" condition, English Heritage said.
Its report added that the Grade I listed building has "the finest internal cast iron framing in the country".
The mill roof has already been repaired and further conservation work agreed.
Production at the mill stopped in the 1980s and it stood empty until recently when it became partially occupied.
The annual survey reports on the condition of industrial heritage sites in England.
Buildings ranging from mills to power stations are more at risk than almost any other kind of heritage, the report said.
Other important sites at risk in the South West include Whitecliffe Furnace, in Coleford, Gloucestershire, and Brandy Bottom Colliery, in Pucklechurch, near Bristol.
The Old Silk Mill in Chipping Camden, Gloucestershire, which was previously on the register, has now been repaired and has been removed from the list.
The report also revealed Bristol's Tobacco Factory has been "saved from demolition" and now has a "viable future" as a theatre, and three key industrial buildings on the Brendon Hills, part of the West Somerset Mineral Railway, have been saved and are in use once again.