Section 31A(4) in The Coal Mines Provident Fund Scheme
(4)Any amount required to be transferred to the Fund under sub-paragraph (3) shall be paid to the Fund by means of account-payee cheque or bank drafts drawn in favour of the Coal Mines Provident Fund Account No. 1 or, as the case may be, by transferring to the Board any Central Government securities in which accumulation of Provident Fund may have been invested.