BY GRAHAM LEE BREWER, Staff WriterThe Oklahoma Department of Corrections released Tuesday the state’s new execution protocol, which was revised after an April execution went awry and became a focal point in the national debate over whether or not the death penalty is cruel or unusual punishment. The April 29 execution of Clayton Derrell Lockett lasted 43 minutes and sparked an Oklahoma Public Safety Department investigation, which included recommended changes to protocol. Lockett was killed with a three-drug cocktail never before used in the United States, and the new protocol allows the state to continue using the most controversial of the drugs, midazolam.Read more on NewsOK.com