Definition of "vanning" []

• A process by which ores are washed on a shovel, or in a vanner. (noun)

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• "~ -- Under this head are classed the method of assaying tin ores, known as vanning, and the amalgamation assay for gold."
• "The process of assaying tin ores adopted in the mines of Cornwall is a mechanical one known as "vanning," the object of which is to find the percentage of "black tin," which, it is well to remember, is not pure cassiterite, much less pure oxide of tin."
• "Buckle up and check out these photo links for a glimpse into the world of Japanese vanning."