Certain union-negotiated pension plans
In the case of a trust forming part of a pension plan which has been determined by the Secretary to constitute a qualified trust under subsection (a) and to be exempt from taxation under section 501(a) for a period beginning after contributions were first made to or for such trust, if it is shown to the satisfaction of the Secretary that—
(1)#
such trust was created pursuant to a collective bargaining agreement between employee representatives and one or more employers,
(2)#
any disbursements of contributions, made to or for such trust before the time as of which the Secretary determined that the trust constituted a qualified trust, substantially complied with the terms of the trust, and the plan of which the trust is a part, as subsequently qualified, and
(3)#
before the time as of which the Secretary determined that the trust constitutes a qualified trust, the contributions to or for such trust were not used in a manner which would jeopardize the interests of its beneficiaries,
then such trust shall be considered as having constituted a qualified trust under subsection (a) and as having been exempt from taxation under section 501(a) for the period beginning on the date on which contributions were first made to or for such trust and ending on the date such trust first constituted (without regard to this subsection) a qualified trust under subsection (a).