Following his service in the Senate, Davis retired to Elkins, West Virginia, where he resumed banking and coal mining. Davis’ company now controlled , employed 1,600 men of sixteen nationalities, operated two power plants, and worked over 1,000 coke ovens and 9 mines within one mile (1.6 km) of the central office at Coketon in Tucker County. By 1892, the Davis Coal and Coke Company, a partnership between Davis and his son-in-law, Senator Stephen Benton Elkins, was among the largest coal companies in the world.