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A nodding donkey oil pump, Texas, USA
A nodding donkey oil pump at Kimmeridge Bay, Dorset, England, United Kingdom, Europe
Nodding donkey oil pumps pumping oil up from the Daqing oil field in Northern China, Asia
A peasant farmer and his donkey cart in front of nodding donkey oil pumps pumping oil up from the Daqing oil field in Northern China, Asia
Nodding donkey oil pumps pumping oil up from the Daqing oil field in Northern China, Asia
Nodding donkey oil pumps pumping oil up from the Daqing oil field in Northern China, Asia
Nodding donkey oil pumps pumping oil up from the Daqing oil field in Northern China, Asia
Nodding donkey oil pumps pumping oil up from the Daqing oil field in Northern China, Asia
Nodding donkey oil pumps pumping oil up from the Daqing oil field in Northern China, Asia
Nodding donkey oil pumps pumping oil up from the Daqing oil field in Northern China, Asia
A long stroke belt pump and a traditional pump jack on adjacent oil wells in the canyon country of Utah.
A conventional horsehead oil well pump jack unit and storage tank battery on an oil well site in Utah.