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Enbridge historical photos: No. 1 of 14

Welding work is conducted along Interprovincial Pipe Line Co.'s 1,150-mile route from Edmonton, Alberta to Superior, Wisconsin.

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Enbridge historical photos: No. 2 of 14

Segments of the Interprovincial Pipe Line (now Line 1) are measured and cut prior to welding during 1950 construction.

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Enbridge historical photos: No. 3 of 14

A then-and-now image showing gas distribution pipeline construction work on Toronto's Yonge Street. Enbridge Gas Inc. predates Interprovincial Pipe Line Co. (now Enbridge) by more than a century, having operated as Consumers' Gas and other entities all the way back to 1848. Photo courtesy, Breda Murphy Photography.

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Enbridge historical photos: No. 4 of 14

Alberta Premier E.C. Manning officially opens the block valve at the Edmonton starting point of Line 1 to begin transporting Alberta crude to Regina refineries (and soon after that to Winnipeg, Superior and Sarnia)./p>

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Enbridge historical photos: No. 5 of 14

Workers open block valves along the Interprovincial Pipe Line Co. pipeline route (now known as Enbridge's Mainline). Enbridge delivered 13 million barrels of crude to refineries in 1951, and 18 million barrels in 1952.

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Enbridge historical photos: No. 6 of 14

A pump station employee keeps things running smoothly along Enbridge's crude oil pipeline network.

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Enbridge historical photos: No. 7 of 14

A pipeline maintenance crew works along the Interprovincial Pipe Line Co. right-of-way.

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Enbridge historical photos: No. 8 of 14

Early days of network monitoring and flow measurement along the Interprovincial Pipe Line Co. system.

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Enbridge historical photos: No. 9 of 14

Examining segments of steel pipe in a Canadian prairies pipe yard.

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Enbridge historical photos: No. 10 of 14

Lowering in pipe along the Interprovincial Pipe Line Co. right-of-way.

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Enbridge historical photos: No. 11 of 14

Another then-and-now Enbridge Gas Inc. photo montage. Enbridge Gas has grown to become North America's third-largest natural gas utility by consumer count (3.7 million customers).

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Enbridge historical photos: No. 12 of 14

The Edmonton Terminal, the starting point of Enbridge's cross-continent Mainline system.

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Enbridge historical photos: No. 13 of 14

Construction work along the Enbridge right-of-way in the 1960s. Our pipeline network was extended to Detroit in 1960, Buffalo in 1963, Chicago in 1968 and Montreal in 1976.

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Enbridge historical photos: No. 14 of 14

The stringing stage of pipeline construction along an Interprovincial Pipe Line Co. right-of-way from more than 50 years ago.

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