Thousands of documents and hundreds of computer disks are being examined by 40 detectives who are working on the Castlereagh case and the alleged IRA intelligence gathering operation at Stormont.

BBC: 'IRA spy ring' inquiry call

The documents included original letters initialled by the Pope indicating that he had read them personally, many photocopies, flash sticks and computer disks, and the results of thousands of internet searches on such varied subjects as Freemasonry, espionage, secret agents, yoga and Buddhism.

BBC: Vatican trial: Verdict due for Pope's ex-butler Gabriele

Neodymium is a rare earth metal used extensively to produce permanent magnets found in everything from computer hard disks and cell phones to wind turbines and cars.

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At least as important is making sure that the computer keeps working smoothly as users fill up their hard disks or add new software.

ECONOMIST: Open sesame

Disks had replaced tapes almost everywhere in the computer business.

FORBES: Serendigity

Computer DVD devices "may never completely replace the disk drive and floppy disks because access time will always be slower on DVD, " he says.

CNN: ASIANOW - Asiaweek