Mechanical and Aerospace Engineering students can and do pursue a wide variety of minors to complement their B.S. degree, based on either professional or personal interests. Minor coursework is typically taken in conjunction with major courses and can provide an enjoyable balance to a student's studies.
Information on minors offered at the University can be found at http://artsandsciences.osu.edu/students/minors. (Information on the business minor is located under "General Business.")
Minor information can also be found through department and college websites. If there is a particular area in which you would like to earn a minor and are having trouble finding information, ask your advisor for help or contact the department of interest!
The department does offer a Nuclear Engineering Minor.