Most of this square is taken up by Chetwynd Barracks, better known as Chilwell Depot. Until recently the depot also covered much of
SK5034.
The Depot was set up as a shell-filling factory during the 1914-18 war. In July 1918 it was the site of a devastating explosion which killed 134. The biggest loss of life from a single explosion in the whole of the war.
More on the event can be found
here and
here