FILE - This Feb. 9, 2016, file photo shows an ice-covered ConocoPhillips sign at a drilling site in Nuiqsut, Alaska. Authorities are investigating a natural gas leak detected last week at a ConocoPhillips Alaska oil drill site on Alaska's North Slope, officials said. Grace Salazar, a special assistant with the Alaska Oil and Gas Conservation Commission, said Wednesday, March 9, 2022, that the commission that oversees oil and gas drilling in the state is investigating the matter. (AP Photo/Mark Thiessen, File)