slate ridge

slate roll, slate ridge

A cylindrical rod of slate; cut with a V-shaped notch on the bottom side to fit a ridge on a slate roof.
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References in periodicals archive ?
With the construction of the Slate Ridge Elementary School and the water line therewith associated, this project was divided into two phases.
When those tractor lugs hit a rock, a slab of slate or a slate ridge, you had to have a tremendous grip on the steering wheel just to keep from being jolted off.