00:00Liquid nitrogen instantly turns deadly waterlogged quicksand into solid bedrock beneath historical
00:06buildings.
00:06The Herring Connect Tunnel Boring Machine pumps minus 196 degree liquid nitrogen deep
00:13into the unstable ground.
00:15Supercooled pipes freeze the moisture inside the shifting sand particles into unbreakable
00:20ice matrices instantly.
00:22This frozen subterranean shield lets heavy mining rigs carve safely through fragile city
00:28foundations.
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