1 Very low-sodium foods contain 35 mg or less per serving. 2  Salt-free/sodium-free foods must contain no more than 5 mg per serving.
Coal County, Oklahoma. Coal County is a county located in the U.S. state of Oklahoma. As of the 2010 census, the population was 5,925. Its county seat is Coalgate.
Coal formation. Coal is a black or brownish black combustible mineral formed about 300 million years ago when the earth was covered by swampy forests of scale tress (lycopods) giant ferns, horsetails, and club mosses.