There is only one known photograph of the experimental submarine, and few details are available about the rescue capsule.
Each time the tiny rescue capsule surfaced, life began again for another miner and his family.
Aaron's Rod did have rescue capsules, and the plan was to move the most vulnerable into them in case of emergency.
The rescue capsule - the Phoenix, to give it its full name - is being prepared at the neck of the tunnel.
Druuna, Will, and a few others escape in a rescue capsule, where they are all put into a state of suspended animation.
The men entered, helped Darenn into a rescue capsule, and carried him off to their flyer.
It made the passage of the rescue capsule less risky, too.
At least two small bell-shaped rescue capsules, each able to hold 10 to 20 people, were lowered to the scene of the accident.
But five men stayed inside and decided to trust their lives to a rescue capsule built onto the top of the sub.
The government signal offered live views from inside the mine as the rescue capsule reached its destination.