Roof Access Restored for Hanford Site Workers After Successful Load Test
A building's roof in Hanford was tested to see if it could hold the weight of people. They couldn't check the roof with a human, so they used a robot in 1994. The test showed that the roof can carry up to 500 lbs without any problems. Earlier, signs said "No Roof Access" but now they can change them to "Roof Access Restricted".