There is a publication this week which was thought to be a natural experiment with sand carrying irondust into the ocean.
本周公布了一个曾被公认的自然实验，它是把沙子和着铁屑一起倾倒在海洋里。
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Reoxidation problems of irondust and fine carbon bearing pellets during reduction cooling and storing in the oxidizing atmosphere have been investigated.
However, the witness statements as well as the physical evidence leave no doubt that combustible irondust was also involved in the aftermath of the explosion.