Here's a look at how the project has unfolded since the pipeline began shipping oil in 1953.

The premier made the admission while advising the Wet'suwet'en hereditary chiefs to allow the Coastal GasLink project to move ahead.

Curtailment has done its job to help Alberta oil prices and the latter half of 2020 should see Canada's oil and gas industry improve, according to Deloitte.

The Upper Nicola Band and Stk'emlupsemc te Secwepemc Nation have dropped their litigation with the Federal Court of Appeal and signed deals with Trans Mountain.

Investors in the oil and gas sector were shrugging off the federal election results despite predictions that a Liberal minority propped up by the NDP and Greens would result in policies that hurt the industry.

The protest comes days after the National Energy Board allowed construction to resume at two Burnaby terminals for the Trans Mountain pipeline expansion.

The decision does not cover a request to resume construction at the Edmonton terminal, which is still under review.

Trans Mountain says it is reviewing the details of Friday's decision and will decide on processes and a construction schedule in the coming weeks.

The Trans Mountain pipeline expansion is once again being challenged in court.

The Trans Mountain expansion "will not be built," vowed the leader of one group opposed to the project.