The Panama government doubled down on its order that First Quantum Minerals FM.TO should halt operations at its flagship local copper mine, since it had been operating without a contract since 2017. By Shristi Achar A and Johann M Cherian Jan 11 (Reuters) - Canada's main stock index gained on Wednesday as energy stocks rose, while investors awaited U.S inflation data due this week to provide clues on the Federal Reserve's rate hike trajectory. Canadian stocks have gained 2.3% since the start of this year as markets rallied on signs of softening U.S. wage inflation.