There are around 100 stone quarries in Panna district of Madhya Pradesh. Scores of people, mostly from extremely impoverished backgrounds, are employed in them. A number of them suffer from silicosis, which is caused by inhaling large amounts of crystalline silica dust. In Bahul Badaur village, which has approximately 900 inhabitants, almost every family has someone afflicted with silicosis. (Video Credit: PTI)