The two mile section of the underwater shield segments is completed, as per reports. The section has a diameter of 55.8 feet (17 meters), and it has 500 pipe rings of underwater shielding.
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The section has a diameter of 55.8 feet (17 meters), and it has 500 pipe rings of underwater shielding. Ninety-eight feet beneath the banks of the Yellow River, construction is still underway on ...