13 His Honour considered the disputed clause in the following way:
84 On one view of it, the express wording of subcl 29(vi) might be said not to cover the circumstances of company closure, even though in the preamble to the clause it refers to retrenchments caused by four factors, one of which is company closure.
85 Subclause (vi) expressly covers notice in circumstances of economic factors, technological change and re-organisations. It is curious that the different notice provisions in subcl (vi)(a) and (vi)(b) do not expressly use the words "company closure" or "restructure." Herein, of course, lies the conundrum. If the disputed expressions are not included, where do they fit? Was this a deliberate intention of the parties to exclude such circumstances from the notice previsions? I think not. Rather, it would appear most likely to have been an oversight or a slip in the drafting that has now created an ambiguity.
86 In order to reconcile this ambiguity, I have considered particularly apposite the manner in which the award clause was actually used and applied in the past. This approach is consistent with the conclusion in Kingmill and the other authorities to which I earlier referred. In this regard I have found the Metalliferous Miners (Elura Mine) Award (Matters 435 and 784 of 1991) judgment of Cullen, J in 1992 to be analogous to the circumstances that confront the parties in this case.
87 The first observation to be made is that the wording of the existing cl 29(vi) was in identical terms in the 1991 agreement (the provision having been first inserted in 1987). Moreover that agreement was made by consent.
88 Secondly, his Honour identified the major factors resulting in the 225 redundancies as "the massive downturn in metal prices in association with adverse exchange rates." The Unions in the present case did not take issue with these two factors as being directly relevant to the present situation. It was not put, nor could it be, I think, that such factors are within the control of Pasminco as the employer.
89 Thirdly, the 1991 redundancies saw a massive reduction in employment from 287 to 65. On one view of it, the 1991 redundancies would likely have had a more severe impact on the employees and the Cobar community than what is envisaged in CBH's purchase of an ongoing operation at Elura in 2003. I accept, of course that all Pasminco employees will be made redundant at the point of sale. It is unclear at this stage how many of these employees will obtain employment with the new owner. No doubt some will.
90 Fourthly, and importantly, I accept the documentary evidence provided by Mr Martin that redundant employees in 1991 were paid one months' notice. There is no evidence that such a payment was a cause of any complaint, grievance or claim that the three months' notice provision in subcl (b) should have applied.
91 In these circumstances, I am compelled to the view that the parties had intended and applied the one month notice provision to a redundancy situation resulting from falling metal prices and adverse exchange rates. It would seem inescapable that this situation was based on economic factors beyond the control of the employer. While the result in 2003 will be different, i.e. a new owner, the circumstances are not dissimilar to those in 1991.