One of history's most dramatic confrontations between capital and labor — the so-called Ludlow Massacre — took place at the mines of the Rockefeller-owned Colorado Fuel and Iron Company (CF&I).

One of history's most dramatic confrontations between capital and labor — the so-called Ludlow Massacre — took place at the mines of the Rockefeller-owned Colorado Fuel and Iron Company (CF&I).

The Colorado Coal war is described as the bloodiest ... of the guerrilla army formed by the union to avenge the Ludlow Massacre – the murder of 20 women and children and of the Greek leader ...