Shaft Sinking from 2007 to 2020: Mechanical excavationEvolution of shaft sinking systems in the western world and the improvement in sinking rates (Part Seven)
Evolution of shaft sinking systems in the western world and the improvement in sinking rates (Part Seven)April 29, 2020
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During the 1970 to 2007 time period, there were a number of changes to traditional shaft sinking systems, both in Canada and in other countries around the world.
The period between 1940 and 1970 can really be called the golden age of shaft sinking.