http://www.epa.gov/oswer/riskassessment/ragsa/pdf/ch10.pdf for information concerning radiological hazards. http://www.ehs.cornell.edu/lrs/manual/ch16.cfm#16.15 for ergonomics. http://web.princeton.edu/sites/ehs/workplacesafety/ergonomics.htm for information on ergonomics. Biological hazards (biohazards). Assessment includes hazards associated with microorganism s, fungi, virus es or toxin s (from a biological source) that can enter a human body by way of inhalation, ingestion, skin or eye contact, transmission by