What effect of dustiblity on angle of repose?

Dustability refers to the tendency of a material to generate dust particles, which can influence the angle of repose—the steepest angle at which a material can remain stable without sliding. Materials with high dustability often have finer particles that can reduce interparticle friction and cohesion, leading to a lower angle of repose. Conversely, coarser materials with less dust generation tend to have a higher angle of repose due to increased stability from larger particle interlocking. Therefore, dustability can significantly affect the stability and behavior of granular materials.