72×54 Figure 12. Light photomicrograph of the typical base metal microstructure from Mount M2 (4% Nital Etchant)., in Pilot Grove, MO PEPL explosion, by John S. Quarterman, for SpectraBusters.org, 25 August 2008

72x54 Figure 12. Light photomicrograph of the typical base metal microstructure from Mount M2 (4% Nital Etchant)., in Pilot Grove, MO PEPL explosion, by John S. Quarterman, for SpectraBusters.org, 25 August 2008

72×54 Figure 12. Light photomicrograph of the typical base metal microstructure from Mount M2 (4% Nital Etchant)., 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

72×54 Figure 12. Light photomicrograph of the typical base metal microstructure from Mount M2 (4% Nital Etchant)., 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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