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Water jets offer precise cutting
10 November, 1999
Water jet cutting allows precise cuts to be made, even in damaged rock, but development work has been slow. David A Summers looks at current developments in this still-promising technique for underground work
Growing old gracefully
08 October, 1999
The integrity of concrete dams not only depends on a good design but on the quality of concrete used for construction. Tim Dolen from the US Bureau of Reclamation gives a US perspective on ageing concrete
A journey of discovery
01 January, 1999
The new energy law in Germany has opened up the country’s electricity sector to market competition and expansion. But how far will hydro power share in this growth? Simon Jones reports
