Confused52 285 Posted December 14, 2020 Report Share Posted December 14, 2020 It was indeed nominally 4 minutes but it might have ended up being less. It involved manual processes to set off the warning I gather. The whole system stopped operatingĀ in 1992. Quote Link to post Share on other sites
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.