News roundup: Troy Brown resigns Louisiana Senate seat … Dow, CH2M partner with Smithsonian to provide Baton Rouge teachers STEM training … Covey Park Energy acquires Chesapeake Energy’s Haynesville assets for $465M

    Moving on: State Sen. Troy Brown reluctantly resigned on Thursday, opting to give up his elected seat rather than face a likely expulsion by colleagues who described him as unfit for the Senate. The A…


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