Down on the Farm: Rock on!
There used to be a lot more rock shops forty years ago than there are today.
We had a rock shop here locally, and I remember begging Mom and Dad to stop the station wagon on summer vacations at the many rock shops between here and the West Coast.
The local rock shop polished agates and such using a cylindrical chamber turned by a small electric motor. Inside the urn were rocks, sand and water. After a month of churning, the rocks came out polished and smooth.
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