After calling attention to the magnitude of the underground systems required for the transportation of oil and natural gas, the author considers in detail the methods employed in field construction, dealing successively with surveying the route, purchasing and preparing the right of way, “stringing” the pipe along the route, welding pipe joints, excavating the ditches, lowering of line into the ditch, laying all-coupled lines, etc. He then takes up the subject of river crossings, following which he discusses at length methods of protecting pipe lines from soil corrosion, and the principal requirements which a good protective coating should meet. Such a coating, the author states, provides reasonable insurance against the destruction of large investments in permanent underground pipe lines.

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