DENVER (AP) -- Denver International Airport is purchasing 27 oil and gas wells on its property that the airport had previously leased to a Canadian company for exploration.

DIA owns mineral rights on all of its property. The airport spent $5.5 million to purchase the wells from Petro-Canada Resources Friday.

DIA estimates the wells could produce an additional $3.5 million a year in revenue. Overall the airport owns 76 wells on its 34,000 acres.

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