Statistics: Tunnelling and Underground Space Technology

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Geo Map
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Region #
NA - North America 27
EU - Europe 3
AS - Asia, other 1
Total 31
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Country #
US - United States of America 27
IE - Ireland 2
DE - Germany 1
SG - Singapore 1
Total 31
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City #
Dublin 2
Santa Clara 1
Unknown 28
Total 31
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Tot
2021 00 0000 0100 00 1
2022 00 0000 0001 01 2
2023 00 0110 1071 40 15
2024 12 0110 1040 00 10
2025 00 3000 0000 00 3
Ever 31