get to the bottom of

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References in periodicals archive ?
Detective Inspector Karnail Dulku, of Middlesbrough CID, said: "We have made strenuous efforts to get to the bottom of this terrible tragedy, which resulted in the deaths of a mother and her two young children.
Last month, scientists began drilling a5-kilometer-deep hole in California, which they expect will get to the bottom of a long-standing paradox about the stresses and heat generated in the nearby San Andreas fault.