Canadian Natural Resources Ltd. will be allowed to resume production at an oil-sands site in northern Alberta plagued by unexplained leaks of crude that seeped to the surface, the province’s chief energy regulator said Monday. The decision partially lifts restrictions on the company’s operations that had been in place since mid-2013 after mysterious leaks of crude were detected at four separate locations at the site, which is about 217 miles (350 kilometers) northeast of the provincial capital of Edmonton. It comes a month after Canadian Natural lowered its annual production forecast, citing delays in the resumption of operations at Primrose East, the field where the heavy oil seepages occurred on the grounds of the Canadian armed forces’ Cold Lake Air Weapons Range. The Alberta Energy Regulator approved the company’s application, which was submitted July 29, to restart production using low-pressure steam injections to extract oil embedded in […]