See also: Mountain

The Mountain is a type of Locomotive to vapor whose Essieu X have the following configuration (from the front to the back):

• a carrying Bogie to 2 Axle X
• 4 driving axles
• an axle or a carrying Bissel

What is written:

• 4-8-2 in Whyte coding.
• 241 in coding of continental Europe.

These machines were built with an aim of having machines of traction combining high speed and great power of traction. Only the 241 D succeeded there.

The type Moutain was not very widespread in France, only three old networks made some build and the SNCF was satisfied with the “unified” series 241 P :

; Company of the East: 41001 prototype of 1924, future: 1-241 has 1
241 Is 241002 to 241041 of 1930, future: 1-241 has 2 to 41 ; Company of the PLM: 241 has 1 to 145 of 1925 with 1932, future: 5-241 has 1 to 145 , less the 48.241 D
241 B 1 prototype of 1930, future: 5-241?
241 C 1 prototype of 1930, ancestor of the 241 P of the SNCF, future: 5-241 C 1
241 D improvement of the 241 has starting from 1932 for 48 units, future: 5-241 D 1 to 48 ; Company of the State: 241-101 State prototype of 1932, future: 3 - 242 has 1 of SNCF
241 State 241001 to 241049 of 1903 and 1934, 49 units copies type Is, future: 1-241 has 42 to 90 ; the SNCF: 241 P 1 to 35 of 1945