86 Ill. Adm. Code 3000.1130
Discovery
Section 3000
Section 3000.1130 Discovery
a) Upon written request served on the opposing party, a party
shall be entitled to:
1) The name and address of any witness who may be reasonably
expected to testify on behalf of the opposing party; and
2) All documents or other materials in the possession or control
of the opposing party, which the opposing party reasonably expects will be
necessary to introduce into evidence. The licensee's burden of production
includes those documents the licensee reasonably expects to introduce into
evidence either in his case-in-chief or in a rebuttal case.
b) Discovery may be obtained only through written requests to
produce witness lists, documents or other materials, as specified in subsection
(a) of this Section. Witnesses and documents responsive to a proper request
for production that were not produced shall be excluded from the hearing and additional
sanctions or penalties may be imposed.