Maintenance is a much higher percentage of this total cost, so Dr Jonkers expects big savings through extending the concrete's service life.

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Dozens of concrete ideas and best practices service, some of which reinforced our early reform efforts, others that suggested new solutions for us to pursue.

WHITEHOUSE: "Doing What Works" Transcript

"Of course I fear for my life after the Danish Security and Intelligence Service informed me of the concrete plans of certain people to kill me, " Westergaard said in a statement posted on the newspaper's Web site.

CNN: Newspapers reprint Prophet Mohammed cartoon

He adds that teams from the army, the fire service and border guards had been drilling holes through concrete walls and pushing through oxygen cylinders and water bottles in an attempt to keep those trapped alive until they could be freed.

BBC: Dhaka building collapse: 'Large group' found alive