225 ILCS 210/2004
Upon receipt of an application, the Department shall investigate the eligibility of the applicant. The Department has authority to request and receive from any federal, state or local governmental agency such information and assistance as will enable the Department to carry out its powers and duties under this Act. The Illinois State Police shall cause the fingerprint based data or other state of the art criminal identification data of each applicant to be compared with the fingerprint based data or other state of the art criminal identification data of criminals now or hereafter filed with the Illinois State Police and with federal law enforcement agencies maintaining official criminal identification files. The investigation shall include, but is not limited to, an oral examination and a written examination as to the applicant's knowledge and ability regarding basic safety, possession, handling, use, storage, disposal and transportation of explosives. Passage of these examinations is prerequisite to being considered for license issuance. Such examinations may be administered by any person designated by the Department.
225 ILCS 210/2004