I used to work at U.S. Steel. We had graphite up to six inches thick covering everything in the BOP shop. It played havoc with the resistor banks on the cranes.
It’d be cool to go back there and take a couple of shovelfuls of graphite, toss it into your basic super-duper high pressure oven, and turn the graphite into a thousand caret diamond. Frustrating! We know how to do it. It’s just the technology getting in our way.