Madda Corporations contracted with the State Rail Authority to excavate tunnels to do the concrete work on the construction of Sydneys Eastern Suburbs Railway. Various stages of the work were to be completed by certain dates, and the whole contract was to be completed within 130 weeks. Due to building noise, local residents applied for and were granted injunctions to restrain work during the night, and as a result, Madda Corporations could not complete the contract on time. Required: Discuss legal rights and duties of Madda Corporations and the State Rail Authority