Ground high, Synonyms sea, Coal facings coal-quality bituminous coal and lignite coal dust. Coal particles in dust form are an odourless dark brown to black dust created by the crushing, Grinding, Or pulverizing coal. Conditions contributing to instability are heat, Sparks & open flame. Chemical properties 1. Ash content 19 to 20%2. Volatile matter 38 to 40%3. Moisture 5 to 7%4. Fixed carbon 37 to 39%5. Mesh size passing through 100 mesh applications 1. Coal dust is utilized within green sand foundries, Automated casting & manual moldings to remove air sourced from the heated metal. 2. Plant disamatics 3. In heat-driven power systems plants, Coal is crushed into fine particles into dust using a device called a powdered coal mill. The called powdered, Resulting product coal or is then, Pulverized coal typically applied in a fossil fuel power plant for electricity generation.