Times (UK): Beneath a shimmering Finnish sky, thousands of workers are toiling below a forest of bright red cranes. Stepping through a hatch between a two-metre thick concrete containment wall, Kathe Sarparanta enters a vast, roofless chamber lined with reinforced steel. “This is the heart of the reactor — the fuel rods will be right there,’ said Ms Sarparanta, an employee of TVO, the Finnish utility, raising her voice above a steady din of hammering and drilling. “The temperature inside will reach …