Delaware Code Title 29. State Government § 10125. Conduct of public hearings;  burden of proof;  record

(1) Issue subpoenas for witnesses and other sources of evidence, either on the agency's initiative or at the request of any party;

(2) Administer oaths to witnesses;

(3) Exclude plainly irrelevant, immaterial, insubstantial, cumulative and privileged evidence;

(4) Limit unduly repetitive proof, rebuttal and cross-examination;

(5) Cause interrogatories to issue and depositions to be taken;  or

(6) Hold prehearing conferences for the settlement or simplification of issues by consent, for the disposal of procedural requests or disputes and to regulate and expedite the course of the hearing.