Bingo!! I’m just catching up this am starting with first post on this thread. You are the only one so far that understands technically.
Just saw the presser on FOX,,,They have shut-down the underground part of the rescue effort,,,Very sad,,,
Too much has been dug out of that mine to support the
mountain’s weight,,,
The rock/ore-wall is too weak to support that much weight,,,
Ain’t no way they can shore it up at this point,,,