Republican presidential nominee Donald Trump met Tuesday morning with a group of oil executives, hoping to ease concerns about his position on fracking.

In a July interview with 9NEWS, Trump expressed support for the idea that voters should be able to ban fracking in their communities-- an idea that oil and gas companies view as a threat to their very existence.

"I think if the voters are voting for it, that's up to them," Trump said in that interview when asked about local fracking bans.. "Fracking is something that's here whether we like it or not, but if a municipality or a state wants to ban fracking, I can understand that."

Lynn Peterson, CEO of Synergy Resources, told Trump that he sees local control over fracking as a threat in the first few minutes of the Tuesday roundtable on the top floor of a downtown office building.

Trump did not address the issue of local control before his campaign staff ushered the press out of the room so the group could continue talking in private.

The candidate did focus on the burden of oil and gas regulations, casting his Democratic rival Hillary Clinton as disastrous to the industry.

“If Hillary gets in, she’ll put you out of business,” Trump told the room of executives.

Oil companies have vehemently fought efforts to ban fracking a the local level in Colorado,striking down voter-approved bans on fracking at the state supreme court.

Trump stayed overnight in Denver after a pair of Colorado rallies on Monday.

Editor’s note: An earlier version of this story credited Scott Stewart of Gilbert-Stewart operating with raising the topic of local control. This has been corrected to reflect that Peterson raised the issue.