Bill Nelson has been a boat captain most of his life. [He] is speaking out for the first time about the two-and-a-half years he spent at the Dozier School for Boys. Just a skinny 11-year old, he was sent away for a crime he was later exonerated of. I was raped over there as a kid, and there were several boys raped. Anything we spoke out about, we went to the White House," he said. It's a story many Dozier boys never lived to tell. "A lot of boys didn't make it. They weren't strong enough to make it," said Nelson. "Sometimes at night you could hear the screams," said Nelson. [The White House is] a small building where the temperature drops inside and paint peels off the walls and where Nelson remembers being tortured. "Sometimes you stayed two or three days in chains and they beat you," he said. "They were beaten to death." Soon the Dozier graveyard, known as Boot Hill, may become a crime scene. Scientists are preparing for a massive exhumation. They've discovered nearly 50 unmarked graves in the woods using ground-penetrating radar. The state shut down the institution for wayward boys in 2011 after allegations of abuse and suspicious deaths. "I didn't want to say anything because it's personal. But with all the boys that died up there, somebody needs to speak up for them," [Nelson] said.