In 1941 4,500 acres of land, north of the railway line at St Marys was used by the Federal government as a munitions filling factory consisting of 850 buildings and seventeen miles of railway. This warehouse was one of the buildings from that time period. Following World War 2 buildings such as this one were leased or sold to private industry as part of the Dunheved Industrial Estate. View shows the northern end of the raised platform.