Lesson plan
Edge mill
An edge mill is a mill used for crushing or grinding in which stones roll around on their edges on a level circular bed. They were developed in China in the third century and are still used today in remote villages around the world. When the millstones were replaced with iron or steel disks in the 19th century, the mills were known as Chilean mills. It is used for milling ore and as an oil mill. Horse or oxen-driven versions were used in pre–Industrial Revolution America as bark mills to shred tree bark to derive tannins for the leather industry.
Article summary
An edge mill is a mill used for crushing or grinding in which stones roll around on their edges on a level circular bed. They were developed in China in the third century and are still used today in remote villages around the world. When the millstones were replaced with iron or steel disks in the 19th century, the mills were known as Chilean mills. It is used for milling ore and as an oil mill. Horse or oxen-driven versions were used in pre–Industrial Revolution America as bark mills to shred tree bark to derive tannins for the leather industry.
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.