Rolls-Royce Archives
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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Notification of an alternative steel material for the 40mm Type BD gun barrel.

Identifier  ExFiles\Box 176\3\  img124
Date  19th August 1940
  
To RM.{William Robotham - Chief Engineer}
O/C HPS.{Horace Percy Smith - Experimental Factory Mgr}
O/C BIK.
O/C Dy{F R Danby}/MM.

Ve/NP.5/CB.19.8.40.

40 mm. TYPE BD{Mr Berend} GUN.

Please note that the barrel for the above gun, drawing No. Q.1712, may now be made in Admiralty OO steel as an alternative to Vibrac (50 tons yield), minimum

Ve/NP.
  
  


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