900×954 Figure 5. Photograph of the external surface of Pipe Segment A2 on the clockwise side of rupture., in Pilot Grove, MO PEPL explosion, by John S. Quarterman, for SpectraBusters.org, 25 August 2008,
http://www.phmsa.dot.gov/pv_obj_cache/pv_obj_id_11F40E719B390ECD8C40151143A379EF2BC52E00/filename/Panhandle_Eastern_GT_MO_508_2008-08-25.pdf
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