Rare earth minerals are often mixed with radioactive elements, and processing creates low-level radioactive waste.

FORBES: The Politics of Rare Earth

Sellafield nuclear firm has pleaded guilty to sending bags of low-level radioactive waste to a landfill site.

BBC: Sellafield Nuclear Plant

This would typically be a manufacturer, distributor, licensed radioactive waste broker, or a licensed low-level radioactive waste disposal facility.

FORBES: Radioactive Tritium Leaks from Nuke Plant; Also Two Million EXIT Signs

It has an advantage over competition in that the company operates a mile-square low-level radioactive waste (LLRW) facility in Clive, Utah.

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Tokyo Electric is now grappling with where to put the stuff, even dumping thousands of tons of less-radioactive water into the Pacific to make room for it in a reservoir for low-level waste.

CNN: STORY HIGHLIGHTS

Meanwhile, engineers are continuing to pump some 11, 500 tonnes of low-level radioactive seawater into the sea so the more highly contaminated water from reactor No 2 can be stored in waste buildings.

BBC: Japan quake: Nitrogen pumped into nuclear reactor