The Amazing True Story Of The Great Escape From Alcatraz

Feeling Chippy

Each night, from about 5:30 pm to 9 pm, they had to physically chip away at the rock in their cell to access the ventilation system. When no one was looking, they would remove the grate from their room and chip away at it using stolen spoons or pieces of wood from when they worked during the day.

This would be the longest part of the plan since it would take weeks and months to subtly chip away, and remove, the rock they would pick for many hours each day.