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What are the advantages of the new sand making machine compared to traditional sand making equipment

What are the advantages of the new sand making machine compared to traditional sand making equipment

Nov 25, 2021 Example 4-8: Tunneling Equipment. In the mid-1980's, some Japanese firms were successful in obtaining construction contracts for tunneling in the United States by using new equipment and methods. For example, the Japanese firm of Ohbayashi won the sewer contract in San Francisco because of its advanced tunneling technology.

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