The Trust may, for the purpose of promoting its objects--
(a) make grants (either unconditionally or subject to conditions) for projects, matters or purposes of a kind described in section 7, and
(b) supervise the expenditure of money so granted, and
(c) expend money as authorised by section 16 (Special provision for pollution clean-up costs), and
(d) engage in such other activities relating to its objects as the Minister may approve.