Atlas O 66906 Operating Oil Pump - Blue and White Steam Loco - 0-4-0 Athearn Genesis G89991 HO Scale

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Atlas O 66906 Operating Oil Pump - Blue and White Steam Loco - 0-4-0 Athearn Genesis G89991 HO ScaleAtlas O 66906 Operating Oil Pump Blue and White The nodding donkey, or pumpjack, is a common sight across the rich oil producing regions of the United States. Whether grouped together in fields of hundreds or standing alone, the slow rocking motion of these visible parts of the vast underground oil extraction process typically extract between 2 to 12 gallons of liquid per stroke, unattended, 24 7, every day of the year, making them extremely cost