Beginning in October 23, 2015, a blowout at the Aliso Canyon storage field near Porter Ranch, CA resulted in a 4 - month long, uncontrolled release of natural gas, one of the largest in U.S. history. (transportation.gov)
As long as it is leaking naturally, into the environment, there's and overwhelming case for tapping into both, to actually and massively reduce the total environmental harm, these currently uncontrolled releases are doing! (jennifermarohasy.com)
Failure of the auxiliary spillway structure will result in an uncontrolled release of flood waters from Lake Oroville.» (businessinsider.com)