If for any cause beyond the control of National Tiles, including but without limiting any act of God, war, strike, lock out, industrial dispute, governmental or semi-governmental award, enactment, priority or restriction, fire, flood, storm or tempest, delay in obtaining licenses, transport, labour or materials, accidents, damage to National Tiles works or business or those of its suppliers, National Tiles is prevented from making delivery or performance at the time stipulated, National Tiles shall be entitled at its option either to extend the time for delivery or performance for a reasonable period or to terminate the contract and the Purchaser shall not in consequence in either case have any claim for damages and shall pay for all deliveries made or services performed, prior to the date of such a termination and all expenses incurred and monies paid by National Tiles in connection with the contract.