sentences:  The Huron Shale deposit in this part of Virginia is called the Nora Field.The site of the town was originally called "Mouth of Open Fork", and in 1882 it was briefly the county seat of the newly formed Dickenson County.In 1904, a post office was built at Mouth of Open Fork, and the first postmaster, W. A. Dorton, arranged for the town and post office to be named for his wife Nora.