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Maxine Peru, the CEO of Peru Resources, hardly noticed the plate of savory quenelles de brochet and the glass of Corton Charlemagne ’94 on the table before her. She was absorbed by the engineering report handed to her just as she entered the executive dining room.
The report described a proposed new mine on the North Ridge of Mt. Zircon. A vein of transcendental zirconium ore had been discovered there on land owned by Ms. Peru’s company. Test borings indicated sufficient reserves to produce 340 tons per year of transcendental zirconium over a 7-year period. The vein probably also contained hydrated zircon gemstones. The amount and quality of these zircons were hard to predict, since they tended to occur in “pockets.” The new mine might come across one, two, or dozens of pockets. The mining engineer guessed that 150 pounds per year might be found. The current price for high-quality hydrated zircon gemstones was $3,300 per pound.
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Peru Resources was a family-owned business with total assets of $45 million, including cash reserves of $4 million. The outlay required for the new mine would be a major commitment. Fortunately, Peru Resources was conservatively financed, and Ms. Peru believed that the company could borrow up to $9 million at an interest rate of about 8 percent. The mine’s operating costs were projected at $900,000 per year, including $400,000 of fixed costs and $500,000 of variable costs. Ms. Peru thought these forecasts were accurate. The big question marks seemed to be the initial cost of the mine and the selling price of transcendental zirconium.
Opening the mine, and providing the necessary machinery and ore-crunching facilities, was supposed to cost $10 million, but cost overruns of 10 percent or 15 percent were common in the mining business. In addition, new environmental regulations, if enacted, could increase the cost of the mine by $1.5 million.
There was a cheaper design for the mine, which would reduce its cost by $1.7 million and eliminate much of the uncertainty about cost overruns. Unfortunately, this design would require much higher fixed operating costs. Fixed costs would increase to $850,000 per year at planned production levels. The current price of transcendental zirconium was $10,000 per ton, but there was no consensus about future prices.1 Some experts were projecting rapid price increases to as much as $14,000 per ton. On the other hand, there were pessimists saying that prices could be as low as $7,500 per ton. Ms. Peru did not have strong views either way: her best guess was that price would just increase with inflation at about 3.5 percent per year. (Mine operating costs would also increase with inflation.) Ms. Peru had wide experience in the mining business, and she knew that investors in similar projects usually wanted a forecasted nominal rate of return of at least 14 percent.
You have been asked to assist Ms. Peru in evaluating this project. Lay out the base-case NPV analysis and undertake sensitivity, scenario, or break-even analyses as appropriate. Assume that Peru Resources pays tax at a 35 percent rate. For simplicity, also assume that the investment in the mine could be depreciated for tax purposes straight-line over 7 years.
What forecasts or scenarios should worry Ms. Peru the most?
Where would additional information be most helpful? Is there a case for delaying construction of the new mine?
