Radiation shielding. There's a lot of it in industry involving electron beam processing which produces x-rays. From printing machines using EB set ink, welding,

Radiation shielding. There's a lot of it in industry involving electron beam processing which produces x-rays. From printing machines using EB set ink, welding, melting, cross-linking, etc. A lot of those machines are lead shielded. Even at particle accelerator labs I've walked past stacks of lead bricks around beam lines (esp around the injector) Sucks that there's so much use for something so dangerous. Amazing the perils we have both dug up and invented in the pursuit of progress which is ultimately just making money.