Is it possible that the transcripts of the grand jury proceedings are available for review?
I'm guessing not, upon reviewing this excerpt from the 18th Judicial Circuit Court (DuPage County) instructions for grand jurors...
"..Unlike many governmental bodies whose actions must be taken openly and their deliberations conducted openly, the grand jury conducts its proceedings in the strictest secrecy. No one but the Prosecutor, a stenographic reporter, the witnesses, or other persons authorized by the Court or by law are allowed to be present in the jury room. In furtherance of justice and upon grounds of public policy, the law requires that the proceedings of grand juries shall be regarded as privileged communications. The secrets of the grand jury room shall not be revealed, except by the Prosecutor solely in the performance of his or her duties, when the Court directs otherwise in the interest of justice, or when a law authorizes the disclosure. As a grand juror, therefore, you should adhere strictly to this rule of secrecy."