(man) We as convicts, is something like a man drowning. We have been convicted of felonies and because of that, we have lost every friend on earth. (narrator) In 1884, a series of remarkable letters was sent from the Pratt Coal Mines to Alabama's new inspector of prisons. Their author was Ezekiel Archey, now a 25-year-old convict. (man, as Ezekiel) "All these years of how we suffered. We have looked death in the face, worked hungry, thirsty, half-clothed and sore. (narrator) Archey was one of hundreds of convicts now being worked in a growing network of mines and factories around Alabama's new industrial center, Birmingham. Founded in 1871 and fed by intersecting railway lines, Birmingham was poised to exploit Alabama's rich underground deposits of coal, limestone, and iron ore: the ingredients of steel. This was the new industrial South, envisioned just prior to the Civil War by slaveholder John T. Milner. (Douglas A. Blackmon) John T. Milner was a brilliant engineer, extraordinary businessman; he was also a supreme racist and a despotic person. (man) Negro labor can be made exceedingly profitable in manufacturing iron and in rolling mills, provided there is an overseer, a Southern man who knows how to manage Negroes. (Douglas A. Blackmon) He laid out some of the first railroad lines that would run across Alabama. In many respects, he was the Father of Southern Industrialization, particularly in the deep, deep South. (narrator) Milner's vision triggered decades of rapid industrial growth. After emancipation, industrialists replaced slaves with convicts, acquiring thousands from state and county governments (Mary Ellen Curtin) You can't drive free labor the same way that you can force prisoners to mine five tons of coal a day. And this is why people like Milner wanted prisoners in his coal mines. He saw them as a great source of profit, and he didn't have to worry about labor disputes. (man) We would leave the cells around 3:00 a.m., and return at 8:00 p.m., going the distance of 3 miles through rain or snow. (Mary Ellen Curtin) To describe the conditions in coal mine at this time, and to say that they're primitive is, you can't even imagine it. (Douglas A. Blackmon) This is a place where for weeks or months at a time, men might never see daylight. The mine was often filled with standing water around their ankles and their feet. They had to drink from that water. Disease ran rampant through these mines. (Khalil Muhammad) They were incredibly dangerous places to work, being subjected to violent explosions, poisonous gases that were released as coal fell from the walls, In addition to the falling coal itself. Whippings, keeping people chained up, brutal kinds of physical torture, and mental abuse are the norm. A lot of the things that kept people in control under slavery, are amplified under this convict system. Zeke Archey was one of about 500 convicts at the Pratt Mines near Birmingham, nearly half the company's workforce. They were overseen by J.W. Comer, the former slaveholder whose enterprises now included convict mining. That Comer's a hard man. I've seen him. I've seen him hit men, 100 and 160 times, with a 10-pronged strap, then say they was not whipped. (Cristina Comer) When I learned about the brutality of J. W. Comer, I um...well, I just started weeping, and um, I actually didn't leave my house for two days, 'cause I was in such a state of grief and shock. The stories that I heard about all the Comer men when I was growing up, were about self-made men. And so to learn about the ways that they weren't really self-made, but were making themselves on the backs and by the blood of other people, specifically the blacks and the convict leasing system, definitely shattered that image for me. He'd go off after an escaped man, one day, and dig his grave the same day.