26 While the content of a "best endeavours" clause depends upon the particular obligation and the circumstances in which it was undertaken, it posits an objective standard to be addressed by reference to what was done or not done in the circumstances that existed; it requires the doing of what can reasonably be done in the circumstances to achieve the contractual object [Hospital Products Limited v United State Surgical Corporation (1984) 156 CLR 41, 64-65, 91-92, 118]. It necessarily includes an obligation not to hinder or prevent achievement of the contractual object [Hospital Products, 64-65 (Gibbs CJ), 95 (Mason J)]. The obligation continues until the obligor "should reasonably judge in the circumstances that further efforts would have such remote prospects of success that they are simply likely to be wasted" [Hawkins v Pender Bros Pty Ltd [1990] 1 Qd R 135, 150-151, 152]; however, one must allow for events, including extraordinary events, as they unfold, as Lewison J said in Yewbelle Limited v London Green Developments Limited [2006] EWHC 3166 (Ch) (at [123]); affirmed [2007] EWCACiv 475 [29], [33], [122], [124]] (emphasis added):
I come back to the question: for how long must the seller continue to use reasonable endeavours to achieve the desired result? In his opening address, Mr Morgan said that the obligation to use reasonable endeavours requires you to go on using endeavours until the point is reached when all reasonable endeavours have been exhausted. You would simply be repeating yourself to go through the same matters again. I am prepared to accept this formulation, subject to the qualification that account must be taken of events as they unfold, including extraordinary events .
27 Centennial Coal and Hunter submit that such an obligation may be discharged by performance, in circumstances where there is nothing reasonably available to be done which has a realistic chance of achieving that outcome. However, this proposition must be subject at least to the following qualifications: first, that such endeavours as could be made to achieve the outcome have been made; and secondly, that even though there may be no realistic chance of achieving the contractual object presently, regard must be had to the possibility of that situation changing - to what extent and for how long that will be so will depend on the contractual context in each individual case.
28 In the present case, the relevant contractual object was the transfer of Centennial's shareholding and capacity entitlement to Mangoola. Other than invoking the Schedule 7 procedure, one way in which that object could have been - and still could be - achieved is if the other parties to the NCIG Shareholders Agreement waived their pre-emptive rights. Seeking the agreement of the other shareholders to that course would ordinarily be a reasonable step towards achieving the contractual object, and one that an obligation to use "all reasonable endeavours" would require be taken. It has not been taken, Centennial Hunter having formed the view that the other shareholders would not agree. Xstrata does not assert the contrary. In those circumstances, it cannot be said that Centennial Hunter has failed to use all reasonable endeavours by not seeking the agreement of the other NCIG shareholders to the transfer and novation. Xstrata has suggested two other means (apart from the Schedule 7 procedure) by which the contractual object might be achieved. It is unnecessary for me to examine them in detail; I am unconvinced that either could lawfully achieve the contractual object, and it follows that I am unsatisfied that they would be "reasonable endeavours". In those circumstances, Centennial contends that the only way in which the contractual object could be achieved is by invoking the Schedule 7 procedure, that its invocation is a "reasonable endeavour" to secure the contractual object, that it has done everything it can to invoke it, and that Mangoola is obliged to co-operate in it but has failed to do so.
29 However, the purpose of the Schedule 7 procedure is to permit existing shareholders in NCIG to acquire shares from any shareholder who wishes to sell, in priority to an external party. If a low transfer price were nominated, there would be a very substantial probability that the shares would be snapped up by the existing NCIG shareholders, and not transferred to Mangoola at all. If so high a price were nominated as to deter other existing shareholders, Mangoola would become obliged to pay - and Centennial entitled to receive - a very substantial premium over and above the consideration provided for by the Anvil Hill Asset Sale Deed. It is impossible to see how the invocation of a procedure which in all probability will result in the shares and ship-or-pay agreements being transferred to other existing shareholders and not to Mangoola, or at best Mangoola having to pay a substantial consideration over and above that in the Asset Sale Deed, could be a reasonable endeavour to achieve the contractual object. To the contrary, its likely consequence would be to defeat the contractual object by resulting in the shares and ship-or-pay agreements being transferred to persons other than Mangoola. To invoke such a procedure would be contrary to Centennial Hunter's obligations under clause 8.6(c)(i) and (ii). Far from being a "reasonable endeavour" to achieve the contractual object that Hunter is obliged to take, it would be calculated to defeat the contractual object and prohibited.
30 It also follows that the Schedule 7 procedure is not one in which Mangoola is obliged to cooperate. Accordingly, its refusal to cooperate is not a breach of its obligations under clause 8.6(b), and does not discharge Hunter from its obligation.
31 It follows that, other than by seeking consent - which both parties appear to accept would at present be futile - there is no reasonable step which Centennial could take to procure the transfer and novation. The plaintiffs contend that the result is that they are discharged by performance.
32 However, that there is no step than can presently be taken to that end is not to say that reasonable endeavours to achieve the result "as soon as reasonably practicable after completion" have been exhausted, so as to discharge the obligation. It may be accepted that Centennial Hunter is not in breach of its obligation to use "best endeavours" under clause 8.6(a) and (b). But breach and discharge by performance are not the only possibilities; a party may be not in breach of a contractual obligation, and still not yet have been discharged from that obligation by performance. Just because novation and transfer are not presently reasonably practicable does not mean that the position is forever frozen. The evidence shows that there are currently on foot negotiations in relation to the implementation of a long-term solution for access to and the expansion of export capacity at the port. The climate for obtaining consent from the other NCIG shareholders may change, and some other commercial realignment of interests may emerge, presenting an opportunity not presently perceived for a transfer: these possibilities are, at least in the context of this case, within the concept of "events, including extraordinary events, as they unfold" referred to by Lewison J in Yewbelle Limited v London Green Developments Limited, in the passage cited above.
33 In this respect, context is of importance. It is not as if the parties did not give consideration to and make provision for the circumstance that it might be impracticable and remain impracticable for the novation and transfer to take place. Indeed, it was because they recognised the difficulties in securing that end that they adopted the "reasonable endeavours" approach, and the interim arrangements in clause 8.6(c). Together, clauses 8.6(a), (b) and (c) recognise that it may not be reasonably practicable to effect the novation and transfer upon completion. Clause 8.6(b) appears in the context of the remainder of clause 8.6, which involves ongoing mutual obligations of each party, unless and until they are "excluded" by Mangoola pursuant to clause 8.6(e). Clause 8.6(c) is intended to achieve the contractual object to the best of the parties' ability, unless and until the novation and transfer takes place, or the NCIG arrangements are excluded under 8.6(e). The obligation imposed by clause 8.6(b) is to use all reasonable endeavours to ensure that the novation and transfer occurs "as soon as reasonably practicable after completion". The obligation to use reasonable endeavours is connected with the state of affairs that the novation and transfer be "reasonably practicable". The evidence establishes that it was not at completion, and is not now (and in the interim has not been) "reasonably practicable" to effect the novation and transfer. If and when it becomes "reasonably practicable", clause 8.6(b) will oblige Centennial then to use reasonable endeavours to effect it. Unless and until that happens, clause 8.6(c) operates to govern the position.
34 In my view, therefore, the obligation imposed by clause 8.6(b) is an on-going one which subsists until a novation and transfer is achieved, or the NCIG arrangements are excluded under clause 8.6(e). Clause 8.6(c) regulates the relevant arrangements in the meantime.
35 I also reject the submission about clause 8.6(c) - that the obligations in clause 8.6(c) are subsidiary to the "paramount" obligations in clauses 8.6(a) and (b) and are intended to preserve the utility and value of the shares and contractual rights and obligations the subject of those clauses only so long as the obligations in clause 8.6(a) and (b) continue - for the following reasons.
36 First and foremost, even if the submission were otherwise correct, for the reasons already advanced Hunter has not been discharged from its obligations under clause 8.6(b), which subsist.
37 Secondly, clause 8.6(c) expressly applies "where the novation and transfer of shares required under clause 8.6(a) has not occurred on and with effect from completion". It contains no hint that it is to cease to apply if the parties cannot effect a novation or transfer after completion.
38 Thirdly, the parties provided by clause 8.6(e) for Mangoola - but not Hunter - to have the ability to exclude the NCIG Arrangements, whereupon clause 8.6(c) would cease to apply. That provision would be superfluous if clause 8.6(c) expired automatically upon discharge of the obligations to use "all reasonable endeavours" under clauses 8.6(a) and (b).
39 Fourthly, a reasonable person with knowledge of the facts known to both parties would conclude that they intended the obligation imposed by clause 8.6(c) to subsist, even if "reasonable endeavours" did not result in a novation and transfer under clauses 8.6(a) or (b), or that such novation and transfer never became "reasonably practicable". Part of the factual matrix known to both parties when the Anvil Hill Asset Sale Deed was agreed was that there were significant capacity constraints at the port; under the Asset Sale Deed Xstrata acquired a new coal mine for which port capacity would be required; initially, the parties contemplated including Centennial's interest in NCIG in the sale, but because of the contractual difficulties imposed by the NCIG Heads of Agreement sought an alternative solution; that alternative solution involved Centennial agreeing to make capacity available through NCIG for the output of the Anvil Hill Mine; and when the sale deed was negotiated, the NCIG terminal was not expected to be operational until late 2009, when Anvil Hill itself was expected to commence production, some two years after completion - so that clause 8.6(c)(iv) was always intended to operate, if at all, some years after completion.
40 Centennial urged that such a construction would leave it in a position of uncertainty in the longer term, with on-going and indeterminate obligations under the ship-or-pay agreement, but potentially no ability to use its capacity entitlement at NCIG because of the on-going obligation to make it available for Mangoola for out-put from the Anvil Hill Mine, with the consequence that it could not rely on its capacity entitlement at NCIG for output from its own Newstan and Mandalong mines. I do not find this persuasive, for multiple reasons: (1) if the contractual object were achieved and the transfer and novation effected, Centennial would have exactly the same problem with access to port capacity for coal extracted from Newstan and Mandalong; (2) the PWCS facility is a common user facility, and it is not self-evident that capacity would not be available to Centennial through PWCS - the mere possibility that its accessibility to NCIG shareholders might in the future be reduced is not a compelling consideration; and (3) in any event, this was a billion dollar deal, and the assumption of some commercial risk by Centennial in return is far from incomprehensible. Far more telling, in my judgment, is that for the acquisition of Anvil Hill to be a commercial proposition, shipping capacity was necessary; conceptually, the Anvil Hill project had included as an aspect the securing of shipping capacity through NCIG, and Anvil Hill was to come on line at about the same time as NCIG; the parties initially contemplated including Centennial's interest in NCIG in the asset sale, and when that proved impracticable - having regard to the terms of the NCIG Heads of Agreement - substituted an alternative mechanism for the purpose of securing, so far as they were able to do so without contravening existing obligations, access to capacity through the NCIG terminal so long as the transfer of shares and novation of the ship-or-pay agreement had not taken place.
41 It follows that clause 8.6(c) is not temporarily limited the way in which the plaintiffs contend. It was intended to be of indeterminate operation, to secure to Mangoola as best as the parties were able, in the context of existing legal constraints, access to capacity at the NCIG terminal, unless and until there was a transfer and novation, or the NCIG arrangements were excluded by Mangoola.
42 It follows that the plaintiffs' claims for declarations to the effect that they have no further obligations under clause 8.6(a), (b) and (c) fail. My conclusion that invocation of the Schedule 7 procedure is not a "reasonable endeavour" within clause 8.6(b) sufficiently disposes of the alternative claim, insofar as it was pressed, for specific performance, by which the plaintiffs contended that the defendants ought to be required to provide the requisite information to facilitate the preparation and issue of an assignment notice to trigger the Schedule 7 procedure.
Should it be declared that Centennial is not liable for breaches of clause 8.6?
43 Centennial Coal and Hunter also claim a declaration that they are not liable for any claim by Xstrata in relation to breaches or performance of clause 8.6. This claim is based on clauses 11.5 and 12 of the Asset Sale Deed. Clause 11.5 provides as follows:
11.5 Time Limits
The seller group is not liable under a claim if:
(a) the buyer does not notify the seller of the claim in accordance with clause 12.1(a) within one year after completion; and
(b) within six months (or such longer period as may be agreed) of the date the buyer is required to notify the seller (as applicable) of the claim under clause 12.1(a):
(1) the claim has not been agreed, compromised or settled; or
(2) the buyer has not issued and served legal proceedings against the seller in respect of the claim.
44 Clause 12 relevantly provides as follows:
12.1 Notice of Claims
(a) (Actual Claims) The Buyer must promptly notify the Seller if:
(1) it or the Buyer's Guarantor decides to make a Claim against a Seller Group Member that, either alone or together with other Claims, exceeds any applicable thresholds set out in clause 11.4(a); or