Section 208(8) in The Coal Mines Regulations, 2011
(8)If a misfired hole is not dislodged by a relieving shot, the procedure laid down in sub-regulation (6) and (7) Shall be repeated and a misfired hole which cannot be dealt with in the manner so provided, shall be securely plugged with a wooden plug and no person other than a shotfirer an official or a person authorised for the purpose shall remove or attempt to remove such plug.
