The review of the investigation was conducted by the General Accounting Office at the request of the Chairman of the Subcommittee on Oversight and Investigations, House Committee on Energy and Commerce. The chronology of the investigation encompasses all activities, including contacts with the grand jury. Agencies involved in the investigation were the U.S. Attorney's Office, the Federal Bureau of Investigation, and Justice headquarters. The audit was conducted from July through November 1986 in accordance with generally accepted Federal auditing standards. This included interviews with key persons and a review of all documents in case correspondence files that did not contain grand jury information. The chronology of activities is outlined by year and month from the number of 1982 through September 1986.