5(1)If underlying mines in which any protected minerals are situated extend on both sides of the undertaking, the owner of the mines may cut and make any communication works through the protected minerals required for the ventilation, drainage and working of the mines.E+W
(2)The communication works shall not exceed the dimensions or sections prescribed by the compulsory purchase order, and where dimensions are not so prescribed, they shall not be more than eight feet high and eight feet wide.
(3)The communication works shall not be cut or made on any part of the undertaking, or so as to injure it or impede its use.
(4)In this paragraph—
(a)“protected minerals” means mines, measures or strata the working of which is prevented under paragraph 3(3) above,
(b)“communication works” means airways, headings, gateways or water levels.