Crews returning to oil installations in Alberta as threat of wildfire subsides. Rain forecast through end of the week in the Canadian province. File Photo by UPI/Al Golub CALGARY, Alberta, June 3 (UPI) — Staff members are returning to Alberta oil installations after emergency service officials cleared the area of major wildfire threats, Cenovus Energy said. Rain is expected through the end of the week in Calgary, the nation’s forecaster said. Hot, dry weather led provincial authorities in May to issue an open-fire ban to curb the spread of wildfires in Alberta. As of Friday, more than 43,000 hectares have burned, though only five of the 41 active fires are considered out of control. Cenovus Energy said its crews were working to restore power to its Foster Creek oil sands operation, which has the capacity to process 135,000 barrels of oil per day. Foster Creek was closed by fire […]