These, of course, are only the major incidents that are deemed worthy of mention. Individual deaths and maimings don't warrant coverage.
There are questions about the numbers killed in last week's Nanjing factory explosion (2) - the official toll stands at thirteen, but it has been suggested that the actuall number of dead is much higher - in part because of the ingenious practice of not counting the dead until at least three days after the explosion, at which point it could be attributed to wounds sustained in the accident, rather than the accident itself.
All very speculative, and the source is the Fulun Gong linked Epoch Times, so it has to be treated with caution. But given the probability that the PRC are releasing dishonest figures for the numbers killed in industrial accidents, interesting.
1 - "29 killed, 14 trapped in mine accidents in China," unattibuted article. Published by the PTI, 3rd of August, 2010. Reproduced by DNA India. (http://www.dnaindia.com/world/report_29-killed-14-trapped-in-mine-accidents-in-china_1418251)
2 - "Conflicting Reports and Propaganda in Wake of Explosion in Nanjing," by Cheryl Chen. Published by the Epoch Times, 2nd of August, 2010. (http://www.theepochtimes.com/n2/content/view/40219/)