September 2017Volume 69 Issue 9
Underground construction industry is strong; 1,400 attend RETC in San Diego
Mining Engineering, 2017, Vol. 69, No. 9, pp. 122-122
The global underground construction and tunneling industry is in pretty good shape. Billions are being spent in shoring up aging infrastructure in the United States and other places, and new underground projects are being put out for bid.
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