Berlin Mills Railway 7
      
Berlin Mills Railway 7| 
  
 Ca. 1991 in Bellows Falls, VT  | 
| Type and origin | 
|---|
 | Power type | 
Steam | 
|---|
 | Builder | 
Vulcan Iron Works | 
|---|
 | Serial number | 
1679 | 
|---|
 | Model | 
I-15-S | 
|---|
 | Build date | 
January 1911 | 
|---|
 
  | 
| Specifications | 
|---|
 | Configuration | 
2-4-2ST | 
|---|
 | UIC class | 
1′B1′ n2tG | 
|---|
 | Gauge | 
4 ft 8 1⁄2 in (1,435 mm) | 
|---|
 | Leading dia | 
26 in (660 mm) | 
|---|
 | Driver diameter | 
44 in (1,118 mm) | 
|---|
 | Trailing dia | 
26 in (660 mm) | 
|---|
 | Length | 
30 ft 9 in (9.37 m) | 
|---|
 | Width | 
9 ft 10 in (3.00 m) | 
|---|
 | Adhesive weight | 
85,000 lb (38.6 tonnes) | 
|---|
 | Loco weight | 
115,000 lb (52.2 tonnes) | 
|---|
 | Fuel type | 
Coal | 
|---|
 | Fuel capacity | 
2 short tons (1.8 tonnes) | 
|---|
 | Water cap | 
1,500 US gal (5,700 l; 1,200 imp gal) | 
|---|
 | Boiler pressure | 
140 psi (0.97 MPa) | 
|---|
 | Cylinders | 
Two, outside | 
|---|
 | Cylinder size | 
17 in × 24 in (432 mm × 610 mm) | 
|---|
 | Valve type | 
Slide valves | 
|---|
 
  | 
| 
 | 
| Career | 
|---|
 | Operators | 
Berlin Mills Railway, Groveton Papers Company, Woodsville, Blackmount and Haverhill Railroad | 
|---|
 | Numbers | 
7 | 
|---|
 | Locale | 
White Mountains Region | 
|---|
 | Last run | 
1963 | 
|---|
 | Retired | 
January 25, 1956 | 
|---|
 | Restored | 
1962 | 
|---|
 | Current owner | 
Steamtown National Historic Site | 
|---|
 | Disposition | 
Sits inoperable in the yard at Steamtown. | 
|---|
 
  | 
Berlin Mills Railway 7 is a steam locomotive at Steamtown National Historic Site.  It was built in 1911 by the Vulcan Iron Works for the Berlin Mills Railway, an industrial line in Berlin, New Hampshire.  Number 7 worked there as a switcher until November of 1944, when it was sold to the Groveton Papers Company of Groveton, New Hampshire.  In 1956, it was finally replaced by a diesel locomotive, ending 45 years of use.  After a few years of idleness, though, the locomotive was leased to the Woodsville, Blackmount and Haverhill Steam Railroad, a new tourist railroad near Haverhill.  Number 7 operated as the only locomotive for this company until it folded after 1963.  It was ultimately donated to Steamtown by the Groveton Paper Company in 1969.
Source
NPS