ConocoPhillips, which last week received U.S. government approval for the massive Willow oil drilling project in Alaska, detailed reasons for a natural gas leak at another North Slope field that prompted the evacuation of 300 employees last year.
Officials with the company said that pumping 170 barrels (27,028 litres) of diesel fuel, a freeze-prevention fluid, into a disposal well caused a component to fail and led to the subsequent leak, the Anchorage Daily News reported.
