BHP-Vale Dam in Breach Was Upgraded With First Rubber Top

  • Concrete spillway raised one meter at Santarem dam in 2014
  • UK's Dyrhoff has been in touch with Samarco to offer help

One of the two dams that burst at an iron-ore mine in southeast Brazil Thursday had been upgraded with an inflatable rubber top that was the first of its kind to be used in Brazil, according to its designer, Dyrhoff Ltd.

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