For comparison the Bhopal disaster (which is much less known in the West) that occurred on 3 December 1984 in Bhopal, Madhya Pradesh, India caused deaths in the range 3928 to 16000.

A government affidavit in 2006 stated the leak caused 558,125 injuries including 38,478 temporary partial injuries and approximately 3,900 severely and permanently disabling injuries.

https://en.wikipedia.org/wiki/Bhopal_disaster