Where a plaintiff could not show that his actions were not possibly the cause of his injury, judgment against as a matter of law on the theory of res ipsa loquitur was appropriate.The 7th U.S. Circuit Court of Appeals affirmed a decision by U.S. District Judge David R. Herndon, Southern District of Illinois.In September 2013, Danny Ruark was working as a machine operator on rail maintenance on the Union Pacific Railroad …