Rock asphalt was first mined at the top of Whitmore Canyon - 15 mi. NE of this location - in the early 1890's. The mine closed in 1898 & re-opened in 1903. It operated erratically until 1915 when it was forced to close due to the development of . . . — — Map (db m148003) HM
Early settlers in Whitmore Canyon, later called Sunnyside, were Jefferson Tidwell, his family and a brother John, who grazed cattle in the area prior to building their home in 1897. They located a vein of coal, sold it to the Utah Fuel Company for . . . — — Map (db m148001) HM
