Ji FU quoted Bill Haywood's book by Big Bill Haywood
This is William D. Haywood's own story, written during the last year of his life. …
The bull-pen was a building in which the prisoners were confined for months. This was a rough lumber structure two stories high. There was no sanitation provided and the excrement of the men above dripped through the cracks onto the men below.
To imagine that bosses could have their employees build such a structure for their fellow workers to be constrained within, outside of the law at all, is a different side of the old-west than what we see on INSP.