The Transportation Safety Board says the escaped gas ignited, causing a fire that "self-extinguished" after the manual closing of valves upstream and downstream of the break.
Indigenous Services Canada says wildfires are threatening nine First Nations in Alberta, including the Little Red River Cree Nation, where more than 100 structures have been lost in the community of Fox Creek.
Alberta's 2019 decision to cancel funding for an elite wildfire-fighting crew in 2019 came despite pleas to keep the Rapattack program from at least three municipalities, including one that has since been evacuated during this spring's blazes.
Cooler temperatures and a bit of rain were delivering some relief for firefighters as they continued to battle wildfires threatening communities in central northern Alberta, but provincial officials warned the reprieve was only in some areas and lightning was sparking some new blazes.
TransAlta Corp. says it is partnering with SemCAMS Midstream ULC to build a $105-million power-and-steam cogeneration facility at a natural gas processing plant near Fox Creek in northern Alberta.
Damaged wellhead 18 kilometres from Fox Creek has been brought under control and that the flow of natural gas and condensate has been stopped - six days after initial blowout.