8o Book of Locomotives 



Very soon after his first " mixed traffic >: 

 engines were running there occurred the 

 disastrous coal strike of April 1921, and 

 the question of running adequate train ser- 

 vices was a problem for the railways. On 

 the Great Northern it was tackled by run- 

 ning huge trains, loading up to 600 tons, 

 with the big " Mogul " mixed traffic engines. 

 On these trains they acquitted themselves 

 like heroes, and probably their perform- 

 ances finally decided Mr. Gresley on the 

 building of " Pacifies ". His first engine 

 was appropriately named " Great Northern", 

 having been put in service in the closing 

 months of this railway's existence as a 

 separate company. Her leading dimensions 

 are: three cylinders, 20x26 inches, driving 

 coupled wheels 6 feet 8 inches; steam pres- 

 sure iSolb.; heating surface 3,455 square 

 feet; total weight of engine and tender 1485 

 tons. 



The other section of the London and 

 North-Eastern the old North-Eastern 

 also adopted the " Pacific " a few months 

 after the monster of Mr. Gresley's design 



