Note: Many interjection words are not translated nor written in the English text section. Translation Clip "a" : T: Here is the last segment towards the antechamber. N: In the small hall, the very cold air (-35C) is mixed with the less cold air (3 C) that comes from the corridor, then that mixture flows towards the surface through a vertical pipe. Clip "b" : T: The airflow seems slower than what it should be, here. Clip "c" : Clip "d" : T: A small tight tunnel of 8 meters long connects the antechamber with the inside chamber of the large test well, where the Hyprop-N is located and frozen down to -190C. It is the last test well access to be sealed, before preparing for a stress test. The seal is airtight and thermally insulated. Clip "e" : T: This white powder is everywhere; this is what makes me cough, I think. Clip "f" : N: The data stream that comes from the Hyprop is detected by 2 cryogenic antennas that are inside the test well interior. 2 cryogenic-insulated tubes that cross the test well walls connect the cryo-antennas with their respective cryo-relays. The electronics inside the cryo-relays is also maintained at -165 C. The detected data flow is then... Clip "g" : N: ...sent to a common relay by a cable, then towards the surface, once processed, towards the bunker, through another cable.