Karibib Stone: Exporting Blocks or Tiles
Karibib Stone quarries dimension stone near Karibib and exports rough blocks through Walvis Bay, mainly to buyers in South Africa and Italy. It sells 400 tonnes of blocks a month at N$3,200 a tonne. Italian buyers say they would pay N$6,800 a tonne for finished tiles, but only if the stone is cut and finished in Namibia and certified to a European standard. A finishing plant would cost N$4.5 million and add N$1,900 a tonne in labour, power, blades and resin. Cutting and polishing loses about 38% of the stone as offcuts and slurry, so only 62% of each tonne quarried becomes saleable tile.
The company has no finishing experience. Its bank will lend only 60% of the plant cost and wants the loan repaid over five years. Namibia's electricity tariffs have risen sharply, and the railway line to Walvis Bay is unreliable, so most block exports currently go by road. The European certification process takes about nine months and costs N$350,000.
1. Calculate the margin per tonne of block sold rough and per tonne processed into tile at 62% yield. Find the yield and the tile price at which processing would break even.
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Rough block: each tonne quarried sells for N$3,200. Treat this as the opportunity cost of processing, because the stone could simply be sold.
Processed tile at 62% yield:
- Revenue per quarried tonne: 6,800 x 0.62 = N$4,216
- Cost: N$3,200 of stone given up + N$1,900 processing = N$5,100
- Margin: 4,216 - 5,100 = -N$884 per tonne At 400 tonnes a month the loss is 400 x 884 = N$353,600 a month. Processing as costed destroys value.
Break-even yield: 5,100 / 6,800 = 0.75, so 75% of each tonne must become saleable tile. The current 62% is 13 percentage points short.
Break-even tile price at 62% yield: 5,100 / 0.62 = N$8,226 a tonne, against the N$6,800 offered.
Break-even processing cost at 62% yield: 4,216 - 3,200 = N$1,016 a tonne, against N$1,900 actual.
So the project needs at least one of three changes: a yield above 75%, a price above about N$8,230, or processing costs below about N$1,020 a tonne. The decision should be driven by which of these is realistic, not by the attractive tile price alone.
2. Apart from the calculation, discuss the risks and opportunities of building the finishing plant.
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Opportunities: finishing would capture value that currently goes to Italian and South African processors, create skilled jobs and support Namibia's policy push for local beneficiation of minerals. It would diversify away from volatile raw block prices, build a Namibian brand in a premium market and give access to European buyers who prefer certified, traceable stone.
Risks: the company has no finishing experience, and the learning curve usually produces lower yields and more breakage in the first year, exactly when the five-year loan must be serviced. Certification takes nine months and N$350,000 before a single tile is sold, and the European standard may require changes to the plant.
Finance is tight: the bank lends 60% of N$4.5 million, or N$2.7 million, leaving N$1.8 million plus certification and working capital to be found. Power tariffs are rising and finishing is energy-intensive, so the cost estimate of N$1,900 a tonne may be optimistic. An unreliable railway means finished tiles, which are heavier per unit of value in some packs and more fragile, may also go by road.
Market risk: two buyers in one or two countries is concentration. EU tariffs, freight rates and exchange rate movements can erase a thin margin. Environmental permits for slurry disposal and water use may also delay the plant.
3. Recommend a course of action for Karibib Stone, with conditions and a decision trigger.
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Do not commit N$4.5 million now. At 62% yield the plant loses N$884 a tonne, and building it would load a profitable quarry with debt and an unproven process.
Recommended path:
- Run a trial: send 20 to 30 tonnes to an existing independent processor and have an accredited laboratory test yield, finish quality and certification requirements. This costs a fraction of the plant and produces real figures instead of estimates.
- Negotiate with the Italian buyers on price and volume, aiming for at least N$8,230 a tonne at 62% yield, or a price and yield combination that clears N$5,100 a tonne of cost.
- Ask equipment suppliers to guarantee yield in writing; modern multi-wire saws and resin lines can reach well above 75%, which would change the economics completely.
- Explore finance beyond the bank: the Development Bank of Namibia or an export promotion facility may lend against an offtake contract, reducing the equity gap.
- Start certification early, because nine months is a long lead time.
Decision trigger: proceed only if the trial shows at least 75% yield, or the buyers commit to N$8,300 or more, and at least 60% of output is covered by a signed offtake contract. If neither holds, keep exporting blocks, diversify buyers towards India and China, and revisit finishing when power and rail reliability improve.