Close The private organization, Cargill, announced the end of its operations at the Avery salt mines in Avery Island, Louisiana. They had originally planned to halt the operations at the last quarter of 2021 as the lease with the landowner Avery Island Inc. is expiring at around the same time. (Photo : United States Department of the Interior - Geological Survey Bulletin 845 Guidebook of the Western United States: Part F. Southern Pacific Lines on Wikimedia Commons) While Cargill will no longer produce salt from the mine, there is still a significant amount of work that needs to be done at the facility to safely close the production line, which will likely take until 2024.