Del. Code tit. 19 § 108
The Department, and any officer of the Department designated by the Department, in the performance of any duty or the execution of any power prescribed by law, may administer oaths, certify to official acts, take and cause to be taken depositions of witnesses, issue subpoenas, compel the attendance of witnesses and the production of papers, books, accounts, payrolls, documents, records and testimony. In case of failure of any person to comply with any subpoena lawfully issued, or on the refusal of any witness to testify to any matter regarding which the witness may be lawfully interrogated, the Department may request the Attorney General of this State to prosecute such person before the Superior Court of this State. If such person shall be found guilty that person shall be deemed to have been in contempt of that Court and shall be punished by that Court in the same fashion as that Court punishes any contempt thereof.
19 Del. C. § 108