A nuclear reactor is represented by a circle on the ground, about twelve feet in diameter. In the centre is the reactor core with some fuel lying on top. A containment device is located off to the side. Outside the reactor, in the control room, are materials available to the team. The team is informed it has about thirty minutes to contain the fuel (some balls) on the nuclear reactor core to prevent a nuclear meltdown. No one can go into the reactor area, and must wear protective gear (blindfolds) if touching anything that does go into the reactor. This is an activity to demonstrate the need for clear roles and responsibilities, effective leadership, good communication, and shared problem solving to be successful. Teams can do this activity simultaneously and potentially help each others problem solving. Or they can work in isolation and compare results later.
Source: From the original site.