![](http://www.alamy.com/thumbs/6/F87FE693-3F62-449D-A03B-9F0EAD3FBDBC/2H18H0A.jpg)
A conventional horsehead oil well pump jack unit and a heater treater on an oil well site in Utah.
Size: 6000px × 4000px
Photo credit: © Jon G. Fuller/VWPics / Alamy / Afripics
License: Licensed
Model Released: No
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