Federal prosecutor Terri K. Flynn said of the message, "It was written in grapefruit juice. And pretty much, you write it in a Q-tip or toothpick, and then the back of it is heated up, and the message becomes visible."
Colorado State Democratic Rep. Buffie McFadyen, whose Pueblo district includes SuperMax, said budget problems for the prison system have left the top-security facility short-changed and short-staffed.
Prosecutors asked for the death sentence for Mills and Bingham, but the jury deadlocked on that part of the case, and so both face automatic sentences next week of life without parole.
Even though he is serving a life term, Mexican Mafia leader Ruben "Nite Owl" Castro was indicted recently on conspiracy charges that accuse him of continuing to run 18th Street Gang drug sales on the streets of Los Angeles from his SuperMax cell.
Officially known as Administrative Maximum (ADX) in Florence, Colorado, SuperMax is home to convicted terrorists such as Olympic bomber Eric Rudolph, Unabomber Ted Kaczynski and Ramzi Yousef, who led the first World Trade Center attack.
