Section 31A(1) in The Coal Mines Provident Fund Scheme
(1)Where an employee who is a subscriber to any provident fund of the coal mine in which he is employed becomes a member of the Fund he shall, if he has not withdrawn his accumulations in that Provident Fund before 1st April, 1966, apply in form and in such manner as the Commissioner may specify, for transfer of his accumulations in the Provident Fund of the coal mine standing to his credit to the Fund.