Immunity from prosecution: conditional grant for full disclosure and cooperation, subject to withdrawal for concealment or non compliance. The Settlement Commission may grant immunity from prosecution and, wholly or partly, from penalty where an applicant has cooperated and made a full and true disclosure, subject to conditions; immunity is barred if prosecution begun before application, may be withdrawn for non payment or non compliance, and may be rescinded for concealment or false evidence, with the Interim Board now exercising these powers.