The original content of Democracy Now! Headlines appears under the Creative Commons BY-NC-ND 3.0 License (United States). For more, including their other shows and media, visit www.democracynow.org. April 10, 2013 Elderly Protester Halts Construction of Keystone XL in Oklahoma ---------------------------------------------------------------- A 79-year-old woman was arrested in Oklahoma on Tuesday for locking herself to a piece of construction equipment used in building the Keystone XL oil pipeline. Nancy Zorn attached herself to an excavator by placing a bike lock around her neck. She was detained after halting construction for several hours. The group Great Plains Tar Sands Resistance says it is escalating protests against the Keystone XL in Oklahoma following Exxon Mobil's tar sands pipeline spill in neighboring Arkansas. .