The safety measures include paving the 1.6-acre recreation yard to prevent inmates from burying weapons, and building new observation points.

The steps are intended to prevent inmates from harassing or defrauding people outside the prison.

The proposed statute aims to expand access to psychiatric treatment and prevent disturbed inmates from trying to hurt themselves.

Guards did not kill any inmate but they did not prevent inmates from killing each other either.

The marble screens of the pavilion are crowned with merlons to prevent inmates being seen from the grounds in between the Fort and the river.

The Oregon Legislature passed a law in 1999 that prevented inmates in federal prisons from voting in local elections.

"Every effort should be made during a hostage situation to prevent inmates from communicating with the outside world," the report said.

Many experts believe that intensive treatment is the most effective way to prevent inmates from returning to prison.

The visits got better recently for Mr. Simmons, since he was allowed out of a wire cage that, as punishment, prevents inmates from touching visitors.

Prison officials were careful to try to prevent inmates on death row from committing suicide, so they would not cheat the chair.