Plombières, nær Aachen, hedder ikke tilfældigt sådan. I det 19. århundrede blev der udvundet bly. Belgien havde også zinkminer i den region. Men når du finder bly og zink, er der også andre metaller, der kan findes som en slags biprodukt af zink- og blyudvinding. Jeg tænker på indium - brugt i LCD-skærme - gallium og germanium - brugt i transistorer, solceller og fiberkabel. Det er byggestenene for moderne teknologi, som vi næsten ikke kan undvære. Men det betyder ikke, at det er økonomisk rentabelt at udvinde det.
Source: De Standaard
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Source: De Standaard
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Source: De Standaard
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