Entry Category: Mining - Starting with U

The United Mine Workers of America (UMWA) was at one time the most powerful union in the United States. The union, which remains active in the twenty-first century, encouraged the development of the Arkansas State Federation of Labor. The UMWA was formed in 1890 in Columbus, Ohio, when Knights of Labor Trade Assembly No. 135 merged with the National Progressive Union of Miners and Mine Laborers. This combined union banned discrimination against any members based on race, national origin, or religion. By 1898, the UMWA had achieved improvements in wages and hours per week with mine operators in Pennsylvania, Ohio, Indiana, and Illinois. In 1898, the UMWA began organizing miners in western Arkansas. Arkansas became a part of District 21, and …