05/21/2012 05:50 pm ET

Harold Hamm Gives Nearly $1 Million To Pro-Mitt Romney Group Following Campaign Appointment

Just one month after he was named Mitt Romney's top energy adviser, Oklahoma billionaire Harold Hamm contributed $985,000 to the top pro-Romney Super PAC -- a donation that was the second largest the group collected in April, according to a new campaign disclosure filing today.

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