What is the main conflict in Storming Heaven: A Novel by Denise Giardina?

The novel Storming Heaven tells four different narrators' perceptions of events surrounding life in the coal camps of West Virginia in the first two decades of the twentieth century. The novel begins as coal companies move into the region and culminates in the story of a real-life deadly battle between mineworkers and mine owners backed by government. It is a story rarely covered in history books.