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![At concentration plant iron ore is first dumped onto these shams which help separate rock from ore. Near Bovey, Minnesota.…](https://images.rawpixel.com/image_social_square/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDIyLTA0L2xvYzIwMTc4MTM0MzAtaW1hZ2UuanBn.jpg)
At concentration plant iron ore is first dumped onto these shams which help separate rock from ore. Near Bovey, Minnesota. Sourced from the Library of Congress.
At concentration plant iron ore is first dumped onto these shams which help separate rock from ore. Near Bovey, Minnesota. Sourced from the Library of Congress.
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