A probe by nuclear regulators into the causes of the March 2011 Fukushima crisis has been hampered by the coronavirus pandemic, with the dispatch of staff from Tokyo postponed for fear of spreading infection among the some 4,000 on-site decommissioning workers.The Nuclear Regulation Authority had resumed its investigation last October, deeming radiation levels in some areas of the crippled Fukushima Daiichi nuclear plant had lowered sufficiently enough, nearly a decade since the disaster.NRA officials had repeatedly traveled to the site from Tokyo and succeeded last December in filming scat…READ FULL ARTICLE