Reply #11: Actually they could,

[MadHound]

In fact Chernobyl was still "cooking" ie the graphite rods were still on fire, radiation was still being released and the fuel was still in meltdown when they started dropping a mixture of clay, sand, lead, boron and boric acid laden concrete, while also injecting liquid nitrogen into Reactor 4. In fact it is that action that actually stopped the disaster at Chernobyl.

The folks at TEPCO could also follow this procedure, now. Instead, they are trying to save the facility and the assets that are still salvageable, which is why we're seeing this dangerous farce of pumping in water, etc.