In this hyper-modern, satellite-powered wireless age, it's easy to forget how not too long ago North America's main connection to Europe was a single cable: the TAT-1. This, the first submarine transatlantic telephone cable was finally completed in 1956, just in time for operators to realise they needed a second. Guess what they named that one.
TAT-2. They named it TAT-2, AT&T just posted a short film from its archives explaining in 1959 not only how the cables was laid but also how it worked. It's a great watch for anybody who's into history but especially for anyone who's into infrastructure. The fibre optics cables that replaces the TAT-1 and TAT-2 in the late 1970s and early 1980s, respectively, still power the internet you're reading this on. So without that early technology, the technology that's now preserving its history might not exist.