Officials: Melted fuel still leaking out of Fukushima reactor — Likely escaping from opening at bottom of containment vessel — Gov’t experts want to give up sending in robots to search for molten cores — “Disaster the likes of which has never been known”

Asahi Shimbun, Mar 24, 2017: Some Nuclear Regulation Authority members are skeptical of continuing to send robots into reactors in the crippled Fukushima No. 1 nuclear plant… These regulators are increasingly calling for a new survey methodology after recent investigations utilizing robots controlled remotely generated few findings and were quickly terminated… The lower part of the reactor’s containment vessel is submerged in water where deposits of fuel debris are believed to reside below the surface after melting through… TEPCO and the government… have yet to collect information on the location, amount and condition of the melted fuel… [T]he surveys centering around the robots so far have failed to produce meaningful results.