The GreatOreCo mining company wishes to determine whether it should proceed to develop a copper mine for a lease that it owns. There would be substantial development costs involved, and the mine would be expected to have a life span of nine years. The company would also be faced with environmental rehabilitation costs when the mine is closed down, and this is reflected by a smaller contribution in the mines final year of operation. Projected costs and yields have been determined and the resulting cash flows are summarised in the table below:

An alternative investment of roughly the same size as the copper mine would be to invest in a sand mining project in Iraq. This sand mining investment has been evaluated to have an internal rate of return of j1 = 22.5% p.a

1 Assuming that GreatOreCo does not have access to sufficient funds to undertake both investments and must choose between them, explain which investment GreatOreCo should make.

2 Identify and explain an additional consideration that might alter this decision.

Year Set Up Costs ($ million) Profit Contribution from mine operation ($ million) 80 20 0 1 2 3 4 5 25 25 25 25 25 25 25 25 10 6 7 8 9