Gas detector early detection methods relied on less precise detectors. Through the 19th and early 20th centuries, coal miners would bring canaries down to the tunnels with them as an early detection system against life-threatening gases such as carbon dioxide, carbon monoxide and methane. The canary, normally a very songful bird, would stop singing and eventually die if not removed from these gases, signaling the miners to exit the mine quickly. The first gas detector in the industrial age was the "flame safety lamp" (or Davy lamp) was invented by Sir Humphry Davy (of England) in 1815 to detect the presence of
American Miners' Association through intelligent organization. Accustomed to better labor conditions in England, many Chartist and lieutenants of the well-formed "Miners’ National Association of Great Britain" arrived in United States and began to spread the gospel of unionism and labor rights among the American miners. Many of these labor rights that they were accustomed to included; shorter work days, increased safety, better ventilation in mines, educational advantages for union members, higher wages and protection for union workers for the future state. The most influential members who participated in the creation of the American Miners’ Association were Thomas Lloyd and Daniel Weaver. Thomas Lloyd,