69.1. Except where otherwise provided for in the contract all questions in disputes relating to the meaning of the specifications, designs, drawings and instructions herein before mentioned and as to the quality of workmanship or materials used on the work or as to any other question, claim, right matter or thing whatsoever is any way arising out of or relating to the contract, designs, drawings, specifications, estimates, instructions, orders or these conditions or otherwise concerning the works or the execution of failure to execute the same whether arising during the progress of the work, or after the completion or abandonment there of shall be referred to the sole arbitration of the General Manager of Power Grid Corporation of India Ltd. And if the General Manager is unable or unwilling to act, to the sole arbitration of some other person appointed by the Chairman & Managing Director, Power Grid, willing to act as such arbitrator. There will be no objection if the arbitrator so appointed is an employee of Power Grid Corporation of India Ltd. And that he had to deal with the matters to which the contract relates and that in course of his duties as such he had expressed views on all or any of the matters in dispute or difference. The arbitrator to whom the matter is originally referred being transferred or vacating his office or being unable to act for any reason as aforesaid at the time of such transfer, vacation of office or inability to act, Chairman and Managing Director, Power Grid Corporation of India Ltd. Shall appoint another person to act as arbitrator in accordance with the term of the contract. It is also a term of this contract that no person other than a person appointed by CMD, Power