Route of Empire Companies' 20-in. gas pipe line, with very few exceptions, is nearly straight line extending some 250 miles; where rock was encountered, dynamite was used in opening ditch; machines used were P and H ditchers manufactured by Harnischfeger Corp.
Laying the Pampa-Wichita twenty-inch pipe line
Gas Age-Rec
Gas Age-Record ; 61 , n 2 ; p 41-42 + 46
1928
4 Figs.
Aufsatz (Zeitschrift)
Englisch
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