In 1969 BR built 52 covered hopper wagons to carry limestone to steelworks. The design was based on the Merry go round coal carrying hoppers of the time. A further 5 were built in 1977 as a replacement for some damaged wagons. NOTE – The photographs which have [m] at the end of the file name are low quality scans and may not print well. A scale drawing of a CBA is in Monk-Steel, David (2011) Merry-go-round on the rails. HMRS publishing, Butterley Station, Derbys. 196 pages ISBN 978-0-902835-30-6.
