(a) If a person is or may be called to produce evidence at a hearing or trial under this chapter or at an investigation brought by the Attorney General under section 612 [Investigation by Attorney General] of this chapter the court for the judicial subdivision in which the hearing, trial, or investigation is or may be held, upon a request of the Attorney General or United States Attorney, as the case may be, which request is certified in writing, shall issue an order, ex parte or after a hearing, requiring the person to produce evidence, notwithstanding his refusal to do so on the basis of the privilege against self-incrimination.
(b) The Attorney General or United States Attorney may certify and request an ex parte order under this section if in his judgment:
(1) The production of the evidence is necessary to the public interest; and
(2) The person has refused or is likely to refuse to produce evidence on the basis of his privilege against self-incrimination.
(c) If a person refuses, on the basis of his privilege against self-incrimination, to produce evidence in any proceeding described in this section, and the presiding officer informs the person of an order issued under this section, the person may not refuse to comply with the order on the basis of his privilege against self-incrimination. If the person refuses to comply with the order, he shall be punished by the Superior Court or United States District Court for contempt.
(d) The production of evidence compelled by order issued under this section, and any information directly or indirectly derived from it, may not be used against the person in a subsequent criminal case, arising out of the same facts or circumstances, except in a prosecution for perjury, false swearing, or an offense otherwise involving a failure to comply with the order.