Source: South China Morning PostChinese migrant workers suffering from incurable black lung disease lived on an average monthly income of just 393 yuan (US$61) last year, far below the national average of over 4,000 yuan a month for other migrant workers, according to an annual survey from a non-governmental organisation.Pneumoconiosis is caused by long-term exposure to dust in workplaces, and is most common among coal miners. It is the most common occupation-related disease in China, based on government data.Around six…Read More