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Field was created solely to accommodate the Canadian Pacific Railway's need for additional locomotives to be added to trains about to tackle the Big Hill. Here a stone roundhouse with turntable was built at what was first known simply as Third Siding. In December 1884 the CPR renamed it Field after Cyrus W. Field, a Chicago businessman who had visited recently on a special train.

Difficult grades exist in both directions from Field, east through the famous Spiral Tunnels 137 miles to Calgary, Alberta; and 126 miles west to Revelstoke, British Columbia through the famous Rogers Pass and the Connaught Tunnel, and where the modern Mount MacDonald Tunnel was opened in 1989.

Following completion of the famous Spiral Tunnels which eliminated the Big Hill, Field remained an important place as it was still necessary to add helper (bank) engines to get trains over the steep 2.2% (116 feet to the mile) grade of the Field Hill.

Even bigger locomotives were needed and this time six massive 0-6-6-0 Mallet type see: Whyte notation were built (one in 1909 and five in 1911, five were compound engines, the last one a simple engine). These were of a unique design with both pairs of cylinders together at the middle of the boiler. The design was not repeated and eventually these engines were rebuilt (1916-17) into 2-10-0’s.

More powerful still were the fourteen 2-10-2’s built (1919-20) for work on the Mountain.

These were followed in 1929 by the most powerful steam locomotives in the British Empire, twenty 2-10-4 type. See: Selkirk locomotive. A further ten were built in 1938 and a final six in 1949, the last one being 5935, the last steam locomotive built for the CPR.

Diesel-electric locomotives would follow, and over the decades bigger and more powerful diesels replaced smaller ones just as was the case with the steam locomotives that had preceded them.

Even though the Spiral Tunnels eliminated the Big Hill, the mountains remained and so too did the Field Hill. The Ottertail revision of 1902 and the five-mile (26,518 feet) long double track Connaught Tunnel of 1906 were other improvements made to the original line. It wasn’t until the late 20th Century when a major new project of twenty miles including the 9.1 mile Mac Donald Tunnel reduced the grade to a very manageable average of 0.82%, (maximum 1%) opened in December 1988.

References

Pierre Berton The Last Spike McCelland and Stewart Ltd. 1971 Toronto/Montreal 0-7710-1327-2

W.Kaye Lamb History of the Canadian Pacific Railway Collier MacMillan Canada Ltd. 1977 BooksEnthsiast.com

Omer Lavalee Van Horne's Road Railfare Enterprises Ltd. 1974 BooksEnthsiast.com Library of Congress Number 73-86285

Robert D. Turner West of the Great Divide Sono Nis Press 1987 Victoria BC BooksEnthsiast.com

Floyd Yates Canadian Pacific's Big Hill BRMNA Calgary, Alberta 1985 BooksEnthsiast.com

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