Keywords: Pump jack animation.gif 4-31-5-5 A Pumpjack in southern Alberta fueled by natural gas fr Chevalet de pompage en Amérique du Nord en wikipedia EvaK CommonsHelper 2007-07-25 Thebiestsc wikipedia en Thebiestsc Original upload log page en wikipedia Pump_jack_animation gif 2007-07-30 23 57 Thebiestsc 432×288× 3826926 bytes <nowiki></nowiki> 2007-07-30 23 53 Thebiestsc 720×480× 10185949 bytes <nowiki>created by Logan Biesterfeldt</nowiki> 2007-07-25 22 44 Thebiestsc 360×240× 2200961 bytes <nowiki>4-31-5-5 A Pumpjack in southern Alberta fueled by natural gas </nowiki> Nodding donkey pumps in Canada Boreholes Animated GIF |