24.3 The Board shall procure that the Board's Representative promptly, and in any event within [ ] Business Days, issues an instruction to Project Co specifying what action the Board's Representative requires Project Co to take in relation to such discovery.
24.4 Project Co shall promptly and diligently comply with any instruction issued by the Board's Representative referred to in Clause 24.3 above (except and to the extent that such instruction constitutes a Board Works Variation pursuant to Clause 24.6 below in which case the provisions of Part 22 of the Schedule (Variation Procedure) shall apply), at its own cost.
24.5 If directed by the Board's Representative, Project Co shall allow representatives of the Board to enter the Site for the purposes of removal or disposal of such discovery provided that such entry shall be subject to the Board complying with all relevant safety procedures, which shall include any relevant health and safety plans for the construction of the Facilities, the Contractor's Site Rules from time to time and any reasonable directions with regard to site safety that may be issued by or on behalf of the Contractor's Site Manager from time to time.
24.6 If any instruction referred to in Clause 24.3 above includes a requirement for Project Co to carry out works (being any work of alteration, addition, demolition or extension or variation in the Facilities) which are not works which would be necessary for the purpose of compliance with Law or any Consents, such works shall be deemed to be a Board Works Variation and the provisions of Part 22 of the Schedule (Variation Procedure) shall apply as if such instruction were a Variation Enquiry issued by the Board in accordance with the provisions of Section 1 of Part 22 of the Schedule (Variation Procedure).61
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61 A discovery of fossils and antiquities is treated as a Relief Event entitling Project Co to an extension of time in accordance with Clause 41 (Delay Events) but leaving the financial risks of such discovery with Project Co. If there is a known problem on site the provisions relating to discoveries may need to be reviewed and amended on a project specific basis.