with some timber lost if it was shoved far enough into the shallows. When the jam crew saw a jam begin, they rushed to it and tried to break it up, using peaveys and possibly dynamite. This job required some understanding of physics, strong muscles, and extreme agility. The jam crew was an exceedingly dangerous occupation, with the drivers standing on the moving logs and running from one to another. Many drivers lost their lives by falling and being crushed by the logs. Each crew was accompanied by an experienced boss often selected for his fighting skills to control the strong and reckless men of his team. The overall drive was controlled by the "walking boss" who moved from place to place to coordinate the various teams to keep logs moving past problem spots. Stalling a drive near a saloon often created a cascade of drunken personnel problems. A larger group of less experienced men brought up the rear, pushing along the straggler logs that were stuck on the banks and in trees. They spent more time wading in icy water than balancing on moving logs. They were called the "rear crew." Other men worked with them from the bank, pushing logs away with pike poles. Others worked with horses and oxen to pull in the logs that had strayed furthest out into the flats. Bateaux ferried log drivers using pike poles to dislodge stranded logs while maneuvering with the log drive. A wannigan was a kitchen built on a raft which followed the drivers down the river. The wannigan served four meals a day to fuel the men working in cold water. It also provided tents and blankets for the night if no better accommodations were available. A commissary wagon carrying clothing, plug tobacco and patent medicines for purchase by the log drivers was also called a wangan. The logging company wangan train, called a Mary Anne, was a caravan of wagons pulled by four- or six-horse teams where roads followed the river to transport the tents, blankets, food, stoves, and tools needed by the log drivers. For log drives, the ideal river would have been straight and uniform, with sharp banks and a predictable flow of water. Wild rivers were not that, so men cut away the fallen trees that would snag logs, dynamited troublesome rocks, and built up the banks in places. To control the flow of