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Mr. J. Ramsbottom

1858 — DX Goods
1863 — 4ft Shunter
1870 — Special Tank

Mr. F.W. Webb

1873 — 17in Coal Engine
1880 — 18in Goods
1881 — Special DX
1881 — Coal Tanks
1893 — ‘A’ class
1894 — Crane Tank
1896 — Dock Tank
1901 — ‘B’ class
1903 — 1400 Class

Mr. G. Whale

1904 — ‘C’ class
1904 — ‘E’ class
1906 — ‘D’ class
1906 — ‘F’ class
1906 — ‘G’ class
1912 — ‘G1’ class
1906 — 19in Express Goods

Mr. C.J. Bowen Cooke

1911 — 1185 class

Capt. H.P.M. Beames

1923 — 380 class


1919 — ‘MM’ class

‘MM’ class

Vital Statistics

Official Name 2-8-0 Engine Consolidation type
Nickname “Military Mary’s”
Water & Coal Storage Tender
Water Capacity 4,000 gallon
Coal Capacity 7 tons
Wheel arrangement 2-8-0
Driven Wheels Eight driving wheels 4ft 8in
Carrying Wheels Two leading wheels 3ft 6in
Wheelbase 8ft 4in - 5ft 8½in + 5ft 5½in + 5ft 11in
Total Wheelbase 17ft 1in
Boiler 4ft 8in diameter; 15ft 0in long
Boiler Pressure 180 psi
Grate Area 26.25 sq.ft.
Tubes ?
Total Heating Area 1,756 sq.ft.
Cylinders Two outside 21in diameter; 26in stroke
Weight 73 tons 17 cwt
Designer Great Central Railway
Number in Class 30 + 151 hired
Lifetime 1919—1933

In common with many railways, after the First World War the LNW purchased thirty 2-8-0’s which had been ordered for use by the Railway Operating Division (ROD Explain 'Railway Operating Division') on the Western Front. Previously 151 had been hired from 1919—1921. They were classed ‘MM’s’ after the Ministry of Munitions which had ordered them but enginemen irreverently named them ‘Military Mary’s’. There was not thought to have been a specific Mary, simply a play on words, unless they were a Mary ‘quite contrary’.

The design had originally come from the Great Central Railway (8K class) and had been chosen for mass production during the war for its power and ruggedness. With two 21in diameter outside cylinders, 153 sq.ft. grate area, 180 psi Explain 'PSI (Pounds per Square Inch)' boiler pressure and eight 4ft 8in driving wheels it was a powerful engine for the time. Not such an effeminate Mary, then.

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