Engine No. 6
Overview
Engine No. 6 is a preserved 2-6-0 “Mogul” steam locomotive built by the Baldwin Locomotive Works in October 1907. Today, it is displayed at McCormick-Stillman Railroad Park in Scottsdale, Arizona, where it is one of the park’s featured artifacts and a reminder of Arizona’s mining and railroad heritage.
Unlike many preserved steam locomotives that hauled famous passenger trains, Engine No. 6 spent much of its career performing the demanding everyday work of the Southwestern mining industry. For decades, it hauled copper ore on the Magma Arizona Railroad, helping connect a major Arizona mining district with the national railroad network.
Today, No. 6 remains an important representative of Arizona’s industrial steam era and is described by the park as the only surviving Arizona & New Mexico locomotive remaining in the state.
Quick Facts
| Railroads | Arizona & New Mexico Railway / Magma Arizona Railroad |
| Number | 6 |
| Wheel Arrangement | 2-6-0 (Mogul) |
| Builder | Baldwin Locomotive Works |
| Built | October 1907 |
| Primary Service | Copper ore and mining railroad service |
| Magma Arizona Arrival | 1922 |
| Retirement | Around 1960 |
| Preserved | Moved to the railroad park in 1977 |
| Current Location | McCormick-Stillman Railroad Park, Scottsdale, Arizona |
| Status | Static display |
A Locomotive for the Mining Frontier
Engine No. 6 was built during a period when railroads were expanding across the American Southwest and serving industries that powered the region’s growth.
While larger railroads such as Santa Fe and Southern Pacific focused on long-distance freight and passenger transportation, smaller railroads provided critical links between mines, communities, and interchange points. No. 6 was built for this world.
The locomotive’s 2-6-0 wheel arrangement made it well suited to the lighter rail, sharp curves, and demanding conditions often found on mining and industrial railroads. Throughout North America, Mogul-type locomotives became successful and adaptable machines for freight, mixed-train, branch-line, and industrial service.
Arizona & New Mexico Beginnings
Before becoming associated with the Magma Arizona Railroad, No. 6 served within the Arizona & New Mexico Railway story. The locomotive later reached the Magma operation, where it earned lasting recognition as a dependable mining locomotive.
Its Arizona & New Mexico heritage adds another layer of significance to its preservation. McCormick-Stillman Railroad Park identifies No. 6 as the only surviving Arizona & New Mexico locomotive remaining in Arizona.
The Magma Arizona Railroad
The story of Engine No. 6 is inseparable from the Magma Arizona Railroad.
The railroad served the copper-mining region around Superior, Arizona, connecting the mines with the national railroad network at Magma. Copper mining helped build Arizona’s economy, and railroads were essential for moving ore, supplies, and equipment.
After arriving on the Magma line in 1922, No. 6 hauled copper ore and other traffic for approximately thirty-eight years. Unlike glamorous passenger locomotives painted for streamliners, No. 6 earned its reputation through day-to-day industrial service.
A Classic Southwest Mogul
Engine No. 6 represents a locomotive type that was once common throughout the American West but is increasingly rare today.
The 2-6-0 Mogul arrangement offered a useful balance of power, economy, and flexibility. Locomotives of this type could handle freight trains, mixed trains, industrial assignments, and branch-line service while operating on infrastructure that might not support larger locomotives.
No. 6 is therefore significant not only for its individual history but also as a representative of the many similar locomotives that once worked across the West.
Retirement and Preservation
Engine No. 6 retired from service around 1960 after more than five decades of railroad service. Few locomotives of its type and working background survived, making its preservation noteworthy.
In 1977, the locomotive was acquired by the Scottsdale Railroad and Mechanical Society and relocated to McCormick-Stillman Railroad Park. Since then, it has become a well-known historic exhibit at the park.
Its preservation ensured that an important piece of Arizona mining history would remain accessible to the public rather than disappearing into scrap.
Why Engine No. 6 Matters
Many preserved steam locomotives are remembered because they hauled famous passenger trains or set performance records. Engine No. 6 tells a different story.
Its importance comes from representing the locomotives that performed essential industrial work away from the spotlight. Equipment like No. 6 helped sustain Arizona’s copper industry by moving ore and supplies between remote mining districts and larger railroad connections.
The locomotive represents Arizona mining railroads, Southwestern railroad history, industrial steam operation, the 2-6-0 Mogul type, the Magma Arizona Railroad, and the Arizona & New Mexico Railway.
In many ways, No. 6 is the opposite of locomotives such as ATSF 3751 or SP 4449. Those locomotives became famous because of the trains they hauled. No. 6 is important because it represents the everyday railroad work that kept the Southwest running.
Preservation Status
Today, Engine No. 6 is displayed at McCormick-Stillman Railroad Park in Scottsdale, Arizona. The locomotive remains one of the park’s important historic artifacts and a visible reminder of Arizona’s railroad and mining heritage.
Although no longer operational, the locomotive continues to educate visitors about a side of railroad history that often receives less attention than famous passenger trains or transcontinental main lines.
Related Railroads
- Arizona & New Mexico Railway
- Magma Arizona Railroad
- Southern Pacific Railroad
Related Museums
- McCormick-Stillman Railroad Park
Related Topics
- Steam Locomotive
- Mogul (2-6-0)
- Copper Mining Railroads
- ATSF 3751
- SP 4449
Gallery
Western Rail Archive Notes
Engine No. 6 reminds us that railroad history was not built solely by famous streamliners and transcontinental freight trains. Across the American West, small locomotives worked quietly in mines, industries, and branch-line operations. Most disappeared without a trace. Engine No. 6 survives as a rare representative of that world and as an important link to Arizona’s copper-railroad heritage.
Archive Status
| Page Status | Category | Type | Gallery |
|---|---|---|---|
| Foundational Article | Equipment | Locomotive | In Development |