Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The term “silicosis” refers to a chronic lung disease resulting from the inhalation of tiny crystallized silica dust. Silica is proved to be the second most common mineral in the earth's crust, being a major component of sand, rock, and quartz. Similar to coal workers’ pneumoconiosis, silicosis is defined as one of the oldest occupational diseases, and remains one of the most common dust-induced respiratory diseases in the developed world. Learn more about the condition, by reading this book.