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Mining Jargon: Arastra or Arrastra or Arrastre

In gold mining, a crude machine used for ore crushing; some sort of grinder powered by water or animals; a circular rock lined pit in which broken ore is pulverized by stones attached to horizontal poles fastened in a central pillar and dragged around the pit.~

According to R. S. Ballou, there were at one time, 7 arrastras on South Fork of Clear Creek on oxidized surface ores with good returns.

E.L. Ballou had an arrastra as did Dayton Hubbard. Other Arrastra owners were Moody, Wright and the Shirland Brothers.~

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