Changes

Drilling

103 bytes added, 05:54, 5 March 2013
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[[File:Petroleum_hq.gif|400px|thumb|right|Petroleum HQ]]
===Oil Well===
:''Main article: [[Oil Well]]''
===Petroleum HQ===
:''Main article: [[Petroleum HQ]]''
===Oil Refinery===
:''Main article: [[Oil Refinery]]''
[[Category:City Specializations]]
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