Climbing without a map: Japan's nuclear clean-up has no end in sight

The storage tanks for treated water are seen at the tsunami-crippled Fukushima Daiichi nuclear power plant in Okuma town, Fukushima prefecture, Japan March 1 2021. Picture taken March 1, 2021. REUTERS/Sakura Murakami

TOKYO (Reuters) - For one minute this week, workers at the Fukushima nuclear station fell silent to mark the 10-year anniversary of a natural disaster that triggered the worst nuclear accident since Chernobyl.

Then they went back to work tearing down the reactors melted down in the days after a tsunami on March 11, 2011.