CHARLESTON, W.Va. (AP) - A new historical highway marker in Charleston honors a United Mine Workers official who led the 1921 miners' uprising that culminated in the Battle of Blair Mountain.

The marker honoring the late William Blizzard was unveiled Friday outside UMW District 17's headquarters. About 150 people attended the ceremony.

Blizzard led an army of 10,000 miners against police and federal troops at Blair Mountain in Logan County in what some historians call the largest armed uprising in post-Civil War U.S. history.

He was tried for treason in 1922 in Jefferson County after winning a change of venue. He was acquitted and continued to lead coalfield organizing drives from the 1930s until his retirement in 1955. He died in 1958.