Hard-won but blood-drenched road to defend rights

In recent years, the number of occupational disease victims in China has risen exponentially. In 2010, new cases surged by percent which equates to a new diagnosis every 10 minutes. Pneumoconiosis accounts for 90 percent of these cases. There are countless more 'hidden' cases. Many migrant workers do not receive compensation or may receive it too late to make any difference to their short lives. 
Here are the stories of seven migrant workers illustrate the hard-won but blood-drenched road to "defend rights".