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On 2019-08-01 11:09 p.m., D. Hugh Redelmeier via talk wrote:
- punch cards and paper tape: 100 years - 9-track mag tape: 10 years
- punch cards and paper tape: 100 years
- 9-track mag tape: 10 years
Good luck getting a reader for any of these now. At least the paper media is scannable. Stewart
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