Final answer:
Miners went on strike in 1894 in the areas of Colorado and West Virginia. These strikes were notable events in the history of labor activism in the U.S., exemplified by the Paint Creek-Cabin Creek Strike and the Ludlow Massacre.
Step-by-step explanation:
The areas where miners went on strike in 1894 were Colorado and West Virginia. Notably, the Paint Creek-Cabin Creek Strike of 1912 in West Virginia was a significant event where unionized workers demanded better pay and conditions, leading to a widespread conflict. Additionally, the Ludlow Massacre was a tragic event in Colorado in 1914, resulting from the strike of coal miners. These events are part of a broader history of labor activism and mining in the United States, where precious metals were discovered, leading to cycles of boom and bust in the region.