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.
The layers of coal are called peat, lignite, subbituminous, bituminous caol, and anthracite. Peat being the most inexpensive and anthracite being the most valuable. Most coal â¦ in use is bituminous.    Another answer: A layer of coal in a mine is called a coal seam. 7 people found this useful.eat being the most inexpensive and anthracite being the most valuable. Most coal â¦ in use is bituminous.     Another answer: A layer of coal in a mine is called a coal seam. 7 people found this useful.