Pneumoconiosis primarily affects workers who work in the coal mining industry. Pneumoconiosis is a lung disease caused by the inhalation of dust particles, particularly those found in coal mines. These dust particles can accumulate in the lungs over time and lead to inflammation, scarring, and impaired lung function. While workers in other industries such as tanneries, distilleries, and glass industry may also be exposed to certain types of dust particles that can affect their respiratory health, coal miners are particularly at risk due to the high concentration of harmful dust in coal mines.