OSHA has issued a new Fact Sheet for Combustible Dust Explosion Hazards. See link:  https://www.osha.gov/Publications/OSHA3878.pdf

Although OSHA has not yet issued a regulation specifically addressing combustible dust issues, it has and will continue to cite employers under a variety of other OSHA regulations and the General Duty Clause for violations related to combustible dust hazards.  See this link for a list of standards under which OSHA may attempt to cite an employer - https://www.osha.gov/dsg/combustibledust/standards.html  The new Fact Sheet is a good reminder to consider whether your facility or worksite may have combustible dust hazards.