https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/12286569![Taking sample of iron ore before it leaves the concentration plant. Bovey, Minnesota. Sourced from the Library of Congress.](https://images.rawpixel.com/image_social_landscape/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDIyLTA0L2xvYzIwMTc4MTM1MzUtaW1hZ2UuanBn.jpg)
![Taking sample of iron ore before it leaves the concentration plant. Bovey, Minnesota. Sourced from the Library of Congress.](https://images.rawpixel.com/image_social_landscape/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDIyLTA0L2xvYzIwMTc4MTM1MzUtaW1hZ2UuanBn.jpg)
Taking sample of iron ore before it leaves the concentration plant. Bovey, Minnesota. Sourced from the Library of Congress.
Taking sample of iron ore before it leaves the concentration plant. Bovey, Minnesota. Sourced from the Library of Congress.
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