DESIGNATION |
TIME CAPSULE EXPO '70 |
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BURIAL SITE |
Osaka Castle Park, Banba-cho, Higashi-ku, Osaka, Japan. |
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Latitude : 34"40'58"526 North |
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Longitude: 135 31'42"718 East |
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Due North: +0 16'5"8 |
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Altitude: 31.159 metres |
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DEPTH OF BURIAL |
Capsule N0.1: 11.4 metres |
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Capsule N0.2: 7.5 metres |
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Measured from surface of monument plinth to top of protective concrete enclosure in each case. |
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MONUMENT |
A stainless steel semi-sphere on a portland stone plinth. An inscription reads |
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EXPO '70 TIME CAPSULE. |
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INSTRUCTIONS FOR OPENING |
In a stainless steel cylinder beneath the monument.
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DATE OF BURIAL |
Capsule N0.1 : January 20th, 1971 AD |
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Capsule N0.2: January 28th, 1971 AD |
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DATE OF UNEARTHING |
Capsule N0.1: 6970 AD |
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Capsule N0.2: 2000 AD (followed by reburial; the process to be repeated every 100 years thereafter until 6970 AD) |
CONSTRUCTION OF CAPSULES |
Shape: Spherical, 1metre internal diameter |
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Capacity: 500,000cm (approx.) |
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Weight: | 1.74 metric tons (empty) |
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2.12 metric tons (with contents) |
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Shell thickness: 35mm-70mm |
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Material: NTK-22AT (nickel-chrome base stainless steel) |
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Finish: Sandblast |
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Method of manufacture: Reverse-casting |
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Method of sealing: Electric welding (inner and outer lids) |
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Internal configuration: 29 stainless steel compartments |
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Internal atmosphere: Argon gas |
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CONTENTS |
Artefacts, scientific specimens, records and documents subjected to various preservation techniques: 2,098 items in all.
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Breakdown of contents by category: |
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Natural Science : | 742 items |
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Social Science : | 686 items |
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The Arts : | 592 items |
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Miscellaneous : | 78 items |
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Records : |
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Printed matter: | Newspapers, magazines, books, Ieaflets, etc. |
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Special techniques : | Microbook, stainless steel etchings, silicon etchings |
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Film : | Microfilm, dye-transfer colour photographs,
16-mm motion picture film |
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Paintings: | Picture scrolls using special pigments |
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Sound : | Magnetic tape, gold-plated phonograph records |
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Principles of acquisition:
l. Purchase through normal retail channels
2. Special objects donated or obtained through other channels
3. Most popular type or brand in case of objects widely available
4. Whenever possible, acquisition of four of each item |
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Recording devices :
Plutonium timekeeper (one in each capsule)
Maximum-minimum thermometer (one above each capsule) |
REPLICA SITES |
1) Osaka City Museum, Osaka Castle Park, Osaka
2) Matsushita House of History; Matsushita Electric Industrial Company, Kadoma, Osaka |
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