Coal is classified in four main categories based on the amounts of carbon it contains and the heat energy it can produce. The higher ranks of coal typically contain more heat-producing energy. Lignite â Over time, heat and burial pressure turn peat into lignite. Lignite is somewhat light in color, soft and crumbly.
Note: The latest contact information is available at the DARS website. DARS provides services to Texans who are disabled and to families with children who have developmental delays.
Doyon Universal Services, LLC (DUS) was created in 1992 through the bringing together of two companies with a collective 80 years of experience in Alaska.DUS is the premier Integrated Facility Management contractor and full spectrum security services provider for the private and public sectors.he Facilities Services of Doyon Universal Services (DUS) prides itself on being the industry leader among support services contractors in Alaska.