Incredible, but it’s true. Roman glass that survived more than 1800 years on the seabed is being studied to help make sure that modern storage facilities for nuclear material will be fail-safe. Read about it here. Imagine the thoughts of the manufacturer of that glass if he were to hear what was being done with it now!
There’s also an interesting article about the dedication of Roman arms and weapons in water as a religious ritual here. Having visited the Roman baths in Bath again recently, I was amazed by the not only the number of votive objects that have been trawled from the pool there, but the size of them. The largest item I can think of was a lead ingot or ‘pig’ from the nearby Mendip mines. Not just large and very heavy, but very valuable. Someone a long time ago was extremely worried about an upcoming enterprise, or extremely grateful that something had gone their way!