Denton, Greater Manchester and then abandoned. After hatting, the most important industry in Denton was the manufacture of lead-acid batteries by Oldham Batteries (Oldham & Son Ltd). In 1865, Joseph Oldham established a millwright general engineering shop and by 1887 this company was manufacturing machinery for the hat-making industry. Another important industry in the area was coal mining and shortly after 1887 the company began making machinery and equipment for this industry, which included miners' portable lamps. Up to this time, miners had always used the safety lamp devised in 1815 by Sir Humphry Davy (1778–1829) but this new battery-powered Davy lamp eventually
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,