Care and Supply of Documents. 6.1 The Specification and Drawings shall be in the custody and care of the Employer. Unless otherwise stated in the Contract, one copy of the Contract and of each subsequent Drawing shall be supplied to the Contractor, who may make or request further copies at the cost of the Contractor. 6.2 Each of the Contractor‘s Documents shall be in the custody and care of the Contractor, unless and until taken over by the Employer. Unless otherwise stated in the Contract, the Contractor shall supply to the Engineer six copies of each of the Contractor‘s Documents. 6.3 The Contractor shall keep, on the Site, a copy of the Contract, publications named in the Specification, the Contractor‘s Documents (if any), the Drawings and Variations and other communications given under the Contract. The Employer‘s Personnel shall have the right of access to all these documents at all reasonable times. 6.4 If a Party becomes aware of an error or defect in a document which was prepared for use in executing the Works, the Party shall promptly give notice to the other Party of such error or defect. 7.