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}}This BR-era Ballast Plough Brake, of type ‘Shark’, was built by BRCW at Smethwick based on the equivalent LMS 16-ton design (also used in 1957 to Diagram BR diagram 1/597, Lot 3040596) but uprated to 20 tons.<ref>[[Bibliography#Other References|Rowland (1996)]] p. 109. The type was based on an LMS design, and </ref> It had large metal ingots installed below the Guard’s floor to add extra weight. Fitted with a handbrake and stove, they were used in ballast train working, the ploughs being used to spread newly-dropped stone ballast.<ref>Severn Valley Railway Stock Book Ninth Edition</ref>

==993876 in service==993876 was built by BRCW at Smethwick in 1957 to Diagram 1/597, Lot 3040.<ref>[[Bibliography#Other References|Rowland (1996)]] Appendix 4</ref> It was later rebuilt by Network Rail with roller bearings and plywood bodywork in place of the original oil axleboxes and planked body. It is a 'vacuum blow-through, air fitted' vehicle. <ref>SVR News 200, Winter 2017</ref>

The SVR's other 'Shark', [[BR 993898 'Shark' Ballast Plough Brake|993989]] is vacuum braked. 993876 arrived at [[Kidderminster]] on 30 March 2017 by road from East Usk yard. It was repainted in grey in July 2017. The same month, [[Locomotives named after the Severn Valley Railway#66763 Severn Valley Railway|GB Railfreight Class 66 No 66763 Severn Valley Railway]] visited the SVR with [[Other rolling stock visiting the SVR#2017|five biomass hoppers]]. The locomotive and hoppers made round trips over the line on 26 and 27 July with 993876 included as the brake van, a purpose for which it was suited being air braked. It is now used regularly on Permanent Way duties along with the other recently acquired air-braked rolling stock such as the [[BR 'Rudd' Ballast Wagons|Rudd]], [[BR 'Seacow' 40t Bogie Ballast Hoppers|Seacow]] and [[BR 'Parr' Bogie Rail Wagons|Parr]] wagons.