title: BNR class NM
text: # BNR class NM
  
  The Bengal Nagpur Railway class NM was a class of ten 4-8-0+0-8-4 Garratt locomotives manufactured by Beyer, Peacock & Company in England. This was modified N class Garratt. It had Thermic siphon and arch tubes for better performance. It worked on the Bilaspur-Katni line and Anuppur-Chirmiri branch line for hauling coal. Probably because of Poppet valves, they retired early.
  
  | Technical specifications |
  | - |
  | Boiler diameter | 7 ft 1+13⁄16 in (2.18 m) |
  | Heating surface of firebox | 330 sq ft (31 $m^2)$ |
  | Maximum train load | 3,000 long tons (3,000 t) on level track |
  