IBM's mini computerslack thereof 826

You can purchase off-the-shelf package units that will sit on a pad on the lawn or in a built for the purpose room. Emergency generators are dirt common. That turbo-generator was 30 years ago, when big iron was big. They also had one of the first Halon 1301 installations with what seemed like dozens of cylinders. Before that you had double shot carbon dioxide systems under the raised floor. You couldn't put carbon dioxide where people are. The next story is second hand, as it was before my time. Ford Motor Co built a big auto glbutt plant in Nashville, Tennessee, in the '50s. At the time it was the largest glbutt plant of any sort in the world. They had equipment pits that were protected by enormous low pressure carbon dioxide systems. When the systems were installed they did a working test to be sure all operated as expected. They did a muster to be sure no-one was in the pit and triggered the system. as staff put on self contained breathing apparatus to look for victims. Fortunately no-one was in the wrong pit. The search was difficult because of the dense fog produced when carbon dioxide is released. If someone had been in the pit he would have been a goner.

-- The night is just the shadow of the Earth.