Vale, the Brazilian mining group, is building technical schools in Brazil and placing recruitment advertisements overseas, in a further sign of the scarcity of geologists and engineers among the world's miners in recent years as rising commodity prices have driven growth in the sector. Vale plans to spend $59bn on expansion over the next five years, generating about 62,000 jobs of which 33,000 will be hired by the company and the rest by its suppliers and other partners. About a fifth of new staff will be recruited overseas. From next week Vale will place recruitment advertisements in Australia, Canada, the UK and the US