Briefly describe the scope and type(s) of discovery available (e.g., depositions, interrogatories, etc.):
Broad discovery; most case types allow for depositions and interrogatories, some case types also allow for requests for admission and requests for production of documents. Hearing officer can limit discovery to avoid inefficiency or harassment, and issue sanctions for failure to appear or produce information.
See 39 CFR 952.21, 954.16(d), 957.18, 959.20, 962.12, 963.14 and 964.9