Syndical Federation of Bolivian Mineworkers

The Syndical Federation of Bolivian Mineworkers (Spanish: Federación Sindical de Trabajadores Mineros de Bolivia; FSTMB) is a labor union in Bolivia that represents miners. Bolivia's miners are commonly regarded as the country's most class-conscious workers.

Source: Wikipedia — Syndical Federation of Bolivian Mineworkers (CC BY-SA 4.0)