1973
Welder on large-diameter pipe.
The company
Interprovincial Pipe Line Limited, reporting from Toronto, Ontario, operated a crude-oil pipeline whose Canadian system ran from Edmonton through Cromer, Manitoba, into Ontario.
p. 2
That year
The 1973 expansion, approved by the National Energy Board for the Canadian portion, included 203 miles of 48-inch loops between Edmonton and Superior, raising capacity out of Cromer, Manitoba by 120,000 b/d to 1,555,000 b/d.
p. 2
Source
archive.org/details/Inte0918_1973
Other years 1968