Gneiss is a high grade metamorphic rock, meaning that it has been subjected to higher temperatures and pressures than schist. It is formed by the metamorphosis of granite, or sedimentary rock. Gneiss displays distinct foliation, representing alternating layers composed of different minerals.
Mountrail County is a county located in the U.S. state of North Dakota. As of the 2010 census, the population was 7,673. Its county seat is Stanley.
Blanton Mill facility is 800 acres in size and works in conjunction with the Shoal Creek Waste Water Treatment Plant. Together they service the western portion of Griffin and parts of Spalding County. The land application site was constructed in 1998 and is permitted for 2.25 MGD.