Contributory negligence
4 The evidence on this issue was given by Mr Hannaford and Mr Cochrane. There were some areas of conflict between the two versions. There was, however, no dispute as to the following facts.
5 On the day of the accident, Mr Hannaford had been engaged in various activities on the property. He said that he would have been involved in probably four or five things going on on the farm. One activity involved the use of the Caterpillar D7G bulldozer. That piece of equipment was being used to de-silt a portion of the bottom of the Namoi River where it flowed through the property. It appears that the presence of logs and sticks in the river, which at that point was only shallow, was causing an accumulation of silt which was interfering with the river's flow. The bulldozer was being used to push the collection of logs and sticks from the river onto the river bank in order to remove the impediment. Mr Hannaford was not driving the bulldozer on this occasion. It was being operated by an employee, Mark Perin. Towards 5:00 pm, in circumstances where dusk was beginning to fall, the bulldozer became seriously bogged in the river bottom. It was necessary that it be removed from this situation. There was some urgency attending its removal because of the need to use it in aid of a fairly tight timetable for the development of the property for cotton farming. Upon learning of the problem, Mr Hannaford went to the scene. At first, he organised an attempted extrication of the bulldozer by using two of the farm tractors, one operated by an employee named Dubner, and the other by himself. The combined effort of these two tractors was insufficient to budge the bulldozer. Consequently, further assistance was required.
6 During that day, Mr Cochrane had been operating a large grader on Mr Hannaford's property. He had been using this piece of machinery for the purpose of clearing irrigation ditches, associated with the development of the property for cotton growing. He was a self employed grader operator and the owner, with his wife, of the grader. He was working for Mr Hannaford, not as an employee but as an independent contractor. Although his operations were at some distance from the scene of the trouble, he heard of the problem over the two-way radio installation in his vehicle. It appears that he heard conversations between Mr Hannaford and his two employees, which were occurring whilst the rescue effort was being undertaken. Of his own volition, Mr Cochrane brought the grader to the scene. He offered his services over the radio and these were accepted by Mr Hannaford. He arrived at the scene and participated in the operation of attempting to extricate the bulldozer.
7 There is some conflict in the evidence as to the situation which obtained upon his arrival. Mr Cochrane testified that the two tractors were linked in tandem to the bulldozer, the first being joined by a chain to the second, and the second being linked by a similar chain to the draw bar on the bulldozer. Mr Hannaford's evidence was to the effect that, at all relevant times, the tractors were linked individually to the bulldozer. It was common ground, however, that Mr Hannaford asked Mr Cochrane to position the grader so that it could be linked by a chain, which it carried as part of its equipment, to the bulldozer and assist in pulling the bulldozer from the river bed on to the river bank. The river bank itself was fairly steep. Photographs that are in evidence indicate this fact. At the top of the river bank there was a relatively flat area over which the grader travelled before coming down the bank and positioning itself at approximately 8 metres from the bulldozer. Mr Cochrane's chain was attached to the draw bar of the bulldozer. He did not attach it himself. It was probably attached by Mr Hannaford. The three vehicles were then used in an attempt to drag the bulldozer on to the river bank. Mr Hannaford organised the operation and was in control of it, in that he issued instructions over the two-way radio system to the drivers of the vehicles. Clearly the chains from the vehicles needed to be adjusted, so that the vehicles pulled evenly and together.
8 According to Mr Cochrane the two tractors were pulling in tandem whilst his grader was independently attached to the draw bar of the bulldozer. Mr Hannaford, on the other hand, was quite clear in his evidence that the three vehicles were independently chained to the draw bar, with the result that the two tractors were not pulling in tandem. It seems clear that his Honour accepted Mr Hannaford's version on this aspect of the case.
9 A first attempt to remove the bulldozer was unsuccessful. A second attempt was made. In the course of this, one of the towing chains broke. There is conflict in the evidence as to which chain it was. On Mr Cochrane's version it was the chain linking the forward tractor to the rear one. On Mr Hannaford's version, it was the chain from a particular tractor known as an Acremaster, which chain was attached directly to the draw bar of the bulldozer.
10 The breaking of the chain brought the rescue operation to a halt whilst the chains were reorganised. Clearly, it was not simply a matter of reattaching the broken chain. The chains had to be adjusted in terms of their length so that when the adjustment was made, the vehicles would pull evenly and uniformly.
11 There is no dispute that Mr Hannaford undertook this task and that it was whilst he was busying himself in removing the chains from the draw bar of the bulldozer, so that they might be readjusted, that the accident happened. There is no dispute that whilst he was so engaged, Mr Cochrane left the controls of his grader and walked the short distance down the river bank towards where Mr Hannaford was working. He left the motor of the grader running and the gears in neutral. He applied the brake and took other steps to retain the grader in its position on the bank. These were insufficient. After a few minutes the grader slid down the bank and crushed Mr Hannaford against the bulldozer. A shouted warning to Mr Hannaford was not successful in removing him from the point of danger. Negligence on the part of Mr Cochrane having previously been found, it was unnecessary for his Honour to make any finding in this regard. However, he indicated what he regarded as being the negligence of Mr Cochrane because the area of negligent activity had a bearing upon the issue of contributory negligence. He found that, in the absence of any direction from Mr Hannaford, as being the man in control of the operation, that he should leave the grader and come down to assist, and his abandoning of control of the grader, in leaving it with its engine running and the gears in neutral, involved a foreseeable risk of harm to persons positioned behind it. His absence from the controls of the grader necessarily meant that if it should slip down the bank, that course could not be arrested by driving it forward.
12 It was common ground that he had received no direction to leave the controls of the grader; nor had he received any direction from Mr Hannaford that he should remain in control of the grader whilst steps were being taken to adjust and reattach the chains.
13 There are some significant areas of conflict in the evidence relating to the period after the breaking of the chain. First, Mr Cochrane testified that the chain which broke was the chain linking the forward tractor to the rear one. Mr Hannaford's evidence, as already indicated, was that the broken chain was one attaching the Acremaster tractor directly to the bulldozer. Although, unfortunately, his Honour makes no express finding, it seems quite clear that he was of the view that Mr Cochrane's evidence should be rejected in this regard. In any event, there is no conflict that after the breaking of the chain, Mr Hannaford was engaged in removing the chains from the draw bar of the bulldozer so that adjustments could be made to cope with the breakage. It is difficult to see why, if the breakage had occurred between the two tractors in tandem, Mr Hannaford should have been confining his efforts to the chains attached to the bulldozer. Mr Cochrane gives no evidence to explain this apparent difficulty in his testimony.
14 Another significant conflict in the evidence arises as follows. Mr Cochrane testified that when he left the controls of the grader and walked down the bank towards where Mr Hannaford was working on the chains, he was able to observe that the chain attaching his grader to the bulldozer was taut. Mr Hannaford's evidence is to the contrary. He said that, at all times, the chains attached to the bulldozer were slack and upon the ground. He says that if they had been taut, it would have been quite impossible to attempt to remove them from the draw bar of the bulldozer. His Honour accepted Mr Hannaford's evidence in this regard. It is an important finding because it negatives a theory propounded by Mr Cochrane and, to an extent, relied upon in argument before us that the movement of the grader was occasioned by a movement in the bulldozer. It was suggested that the bulldozer which had been moved very slightly by the previous pulling attempts had slid back and in doing so, because of the taut chain between it and the grader, had pulled the grader down the bank.
15 However, his Honour found that Mr Hannaford had been seeking to remove the pin from the draw bar in order to release the chains. The chains were slack while he was doing this. The grader moved at a time when the chains were slack. Moreover, the finding in favour of the slackness of the chains supports another part of Mr Hannaford's evidence. He says that when he addressed the problem occasioned by the breaking of the chain and saw the necessity of removing the chains from the draw bar he directed Mr Cochrane to reposition the grader. Clearly enough, this was to slacken the chain and enable Mr Hannaford to undertake its removal. Although his Honour makes no specific finding in this regard, it is our view that his finding as to the slackness of the chain, which was clearly correct, leads reasonably and necessarily to the acceptance of Mr Hannaford's evidence that, prior to working on the chain, he gave the direction referred to above, namely that Mr Cochrane should re-position his vehicle.
16 It should be mentioned that there is no dispute in the evidence that Mr Hannaford was unaware that Mr Cochrane had left the controls of the grader. Although Mr Cochrane had been in the area where the work was going on for some minutes, it is clear and undisputed that Mr Hannaford had his back to him and did not know of his presence or, more significantly, did not know that he had ceased to be in control of the grader after its repositioning.
17 We have spent some time in this discussion of the facts surrounding the accident and in expressing our views as to what the evidence establishes. This has been necessary because his Honour did not make express findings of fact in some areas and did not indicate any general preference for one version against the other. However, the findings of fact that he made, which have been referred to in these reasons, necessarily lead to the additional findings indicated. In these circumstances, it is unnecessary to lengthen these reasons by setting out passages from his Honour's judgment in relation to the issue of contributory negligence. Counsel for the appellants has made a general complaint as to deficiencies in his Honour's judgment, in relation to the absence of findings of fact and, more particularly, in relation to a failure to deal with arguments of substance placed before him on behalf of Mr Cochrane. We shall have occasion to refer to these submissions later in these reasons. However, we are not persuaded that, in relation to the issue of contributory negligence, these deficiencies should result in there being any retrial of the issue.
18 It is clear that the main argument of the appellants in relation to this issue was put to his Honour as it has been put to the Court; namely that Mr Hannaford was in control of the whole operation of the removal of the bulldozer and that, being in that position, he should have taken care to see that Mr Cochrane remained in control of the grader at all relevant times. It was pointed out that there was a hazardous quality to the operation. The grader was positioned on a marked downslope, it was a significantly heavy vehicle, it was only a short distance from where the men including Mr Hannaford were working and that any downward movement on its part would put them in peril. It was submitted that in these circumstances Mr Hannaford owed to himself a duty analogous to that owed to his employees to establish and maintain a reasonably safe system of work. This would entail giving appropriate instructions to Mr Cochrane as to his remaining in control of the grader and as to ensuring that those instructions were carried out. Authorities such as Stevens v Brodribb Sawmilling Co Pty Ltd (1986) 160 CLR 16 and Burnie Port Authority v General Jones Pty Ltd (1994) 179 CLR 520 were relied upon to underpin a submission that Mr Hannaford was a victim of a failure on his own part to provide a safe system of work and that his duty in this regard was non-delegable. We do not think that these authorities are in point.
19 It has often been said that the question of contributory negligence should not be approached by way of an analysis of relevant duty and breach. The question is a simple one; namely, whether the plaintiff in all the circumstances had taken reasonable care for his own safety. (See for example the discussion in The Law of Torts, Fleming, 9th ed Ch 12 p302.) In our view the question of contributory negligence in this case must be approached realistically and practically. Whilst it is true that Mr Hannaford had overall control of the operation being conducted by his employees and, for the limited purpose of the extrication of the bulldozer, also had control over the activities of Mr Cochrane, these facts, which were acknowledged by his Honour in his judgment, are not determinative of the issue. What must be determined is whether Mr Hannaford acted unreasonably having regard to his own safety in the situation which obtained upon the breaking of the chain. This was an unexpected circumstance requiring urgent remedial action. He gave an instruction to Mr Cochrane to reposition the grader so that the chain could be slackened off preparatory to its removal from the bulldozer's draw bar. Thereafter, he immediately busied himself with the operations required for the removal of the draw bar pin and the adjustment of the chains. He would necessarily have had his attention concentrated on this operation. He had no reason to expect that Mr Cochrane, apparently an experienced grader operator in charge of his own grader, would not take all proper steps to remain in control of it during this re-adjustment. In particular, he was not aware that Mr Cochrane had left the controls of the vehicle nor did Mr Cochrane draw this to his attention. It was, in our view, perfectly reasonable, in these circumstances, for Mr Hannaford to assume, as he clearly did, that the grader would be maintained safely in position by Mr Cochrane, its operator and owner.
20 In our opinion, no error has been demonstrated in his Honour's finding that there was no contributory negligence on the part of Mr Hannaford.
21 We turn, then, to the attack which has been made on his Honour's findings as to damages.