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Storing items in a sealed chest for 25 years

accet87 (2688993) writes | more than 2 years ago

3

accet87 writes "We are celebrating the Silver Jubilee of our graduation next month and have come up with an idea where we will build an air-tight chest in which each of us will deposit something and will open the chest only on our Golden Jubilee, i,e, after another 25 years. I want to understand what kind of items can be safely stored for 25 years and what kind of precautions are required to be taken. I am sure things like paper, non ferrous metallic objects, wood etc will hold good.
What about data storage elecronically? I dont think CD/DVD etc will be usable. Even if the data is retained, reading it in 2037 may be a challenge."

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Give 'em a little help (1)

Deadstick (535032) | more than 2 years ago | (#40724805)

I dont think CD/DVD etc will be usable. Even if the data is retained, reading it in 2037 may be a challenge.

So put a small laptop in the chest. Maybe without the battery, lest it leak...if the folks in 2037 can't supply a DC voltage, they're pretty much screwed anyway.

Re:Give 'em a little help (1)

accet87 (2688993) | more than 2 years ago | (#40727429)

I dont think CD/DVD etc will be usable. Even if the data is retained, reading it in 2037 may be a challenge.

So put a small laptop in the chest. Maybe without the battery, lest it leak...if the folks in 2037 can't supply a DC voltage, they're pretty much screwed anyway.

Thanks for the suggestion. If we are putting in a laptop we might as well store the data in the hard disk; I am told that a SATA drive would be safe.

Suggestions (1)

Jane Q. Public (1010737) | more than 2 years ago | (#40727975)

If you are going to put something on paper that isn't already, to store, use acid-free archive paper that is available at most good paper supply outlets.

Even ferrous metals are probably fine if kept dry (see below), but you should probably wrap metal items in cloth or put them in cloth bags so that dissimilar metals do not touch.

It must be dry. The chest should be taken into a cold place, with the items in it, for a while before sealing it. A walk-in freezer of the sort restaurants use is good for this. Open it for a moment while in the freezer to let the cold, dry air in, then close it and let it chill. Seal it while still cold, before removing from the freezer. ALSO, include plenty of silica gel (a dessicant) inside the chest to suck up any moisture that remains.
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