Mary Harris "Mother" Jones was a powerful labor leader who helped coal miners and other workers fight for better conditions. Born in Ireland around 1837, she moved to the U.S., faced personal tragedy, and later became a voice for working people across the country. She joined the United Mine Workers and visited West Virginia many times to support striking miners, including during the famous Paint Creek-Cabin Creek strike.

She was arrested more than once, helped expose harsh conditions, and even got the attention of Congress. Mother Jones also fought against child labor. Even in her 90s, she stayed active in labor causes. She died in 1930 and is remembered as a hero to working people.