In this Monday, June 9, 2014, natural gas is flared at an oil production facility in Williston, N.D. On Tuesday, July 1, 2014, North Dakota regulators adopted the most stringent rules to date aimed at reducing the amount of natural gas that is burned off and wasted as a byproduct of the state's soaring oil production. The state Industrial Commission unanimously endorsed a policy that sets goals to reduce flaring in incremental steps through 2020. (AP Photo/Charles Rex Arbogast)
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