If this were Mao's China...
... there would have been no press on this disaster. Anyone talking about it would never be heard from again. However, I do suspect the "missing" is a bit higher than being reported and in light of the de-contamination effort getting underway, the death toll might be higher also. Probably this is keep a panic from happening as there's also reports of "unknown" chemicals that were stored there.. IOW, they've lightened up control of the press a bit, but not allowing a US style media frenzy with all that brings on.