6(1)If underlying mines extend on both sides of the undertaking, the acquiring authority shall from time to time pay to the owner of the mines (in addition to any compensation under paragraph 3 above) any expenses and losses incurred by him in consequence of—E+W
(a)the severance by the undertaking of the land lying over the mines,
(b)the interruption of continuous working of the mines in consequence of paragraph 3(3) above, and
(c)the mines being worked in such manner and subject to such restrictions as not to prejudice or injure the undertaking,
and for any minerals not purchased by the acquiring authority which cannot be obtained by reason of the making and maintenance of the undertaking.
(2)Any dispute as to the amount payable under this paragraph shall be determined by arbitration.