InvestorsUpstreamExxon begins selling of shale assets to push divesting strategy: ReuterseditorAugust 11, 2021August 11, 2021 by editorAugust 11, 2021August 11, 20210609 Exxon Mobil, the biggest oil producer in the United States, has begun the selling of important shale assets, as it tries to push a long-delayed...