The Willoughbys Jigsaw Puzzle
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Oil Well Drilling
Oil is now one of the essential energy resources, the acquisition of oil is also quite important to work. You need to do a perfect job of collecting oil. You need to pay attention to the bearing capacity of the drilling hole. When used too long, it will be scrapped and the collection will fail. Complete the mission, gain revenue, upgrade equipment, in order to more easily collect oil!
