The Globe and Mail reports in its Thursday edition that a wildfire in Alberta that was sparked by a natural gas pipeline rupture is under control, but an investigation into what caused the pipeline to break could take months or even years. A Reuters dispatch to The Globe says that as of Wednesday morning, there was very little fire activity left in Yellowhead county, where a 10-hectare fire burned on Tuesday about 40 kilometres northwest of Edson. "But for it to be considered extinguished, we're going to have to hot spot," said Caroline Charbonneau at Alberta Forestry and Parks. "That means we'll have to dig into the ground, look and feel for hot spots, and then douse it with water. And that could take several days." The fire on Tuesday, which occurred as much of Alberta is dealing with extremely dry early spring conditions, was sparked when a natural gas pipeline owned by TC Energy ruptured. There were no injuries, and the fire was never a threat to surrounding communities. The affected pipeline segment was isolated and shut in. The 36-inch-diameter pipe that ruptured is part of TC Energy's NGTL pipeline system, which transports natural gas from Alberta and northeast British Columbia to domestic and export markets.