1968
Roughnecks handling pipe on the rig.
The company
Imperial Oil Limited was incorporated under The Canada Joint Stock Companies Act, 1877 on September 8, 1880, with head office at 111 St. Clair Avenue West, Toronto 7, Ontario.
p. 3
That year
In 1968 Imperial refineries processed 359,000 barrels of crude a day; Sarnia's capacity rose 32 per cent to 124,000 barrels a day, and a 62-mile products pipe line opened from Montreal East to Drummondville.
p. 12
Source
archive.org/details/Impe1835_1968
Other years 1970