Panama's government and Canada's First Quantum Minerals FM.TOagreed on the final text for a contract to operate the Cobre Panama mine, and Panamanian authorities allowed the company to resume concentrate loading operations. March 9 (Reuters) - London copper prices fell on Thursday, as the dollar hovered near a three-month high, making the greenback-priced metal more expensive to holders of other currencies. The dollar held near a three-month high on U.S. Federal Reserve Chair Jerome Powell's message that interest rates would have to go higher and possibly faster to tame inflation.