Shaft sinking original-equipment manufacturer Herrenknecht is engaged in numerous feasibility studies with mining contractors in South Africa and other African countries, such as Zambia, for the ...
What’s 14 feet tall, weighs 380 tons, lives more than a hundred feet underground, and moves 1/4 mile per hour at its fastest? Alexandria’s new tunnel boring machine, of course! The massive blue and ...
Getting your Trinity Audio player ready... After more than a decade of planning, community meetings — and more planning — an ambitious $630 million effort to replace two aging underground wastewater ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results