FILE - This Nov. 3, 2015 file photo shows the Keystone Steele City pumping station, into which the planned Keystone XL pipeline is to connect to, in Steele City, Neb. Pipeline sponsor TC Energy says it has started preliminary work along its route through the U.S. as opponents wait for a judge to rule on their request to block the project. (AP Photo/Nati Harnik, File)
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