Clue | Source | Date |
---|---|---|
Sudden collapses | LA Times Daily | 25 Mar 2023 |
Serious concerns for spelunkers | Universal | 07 Dec 2022 |
Structural collapses | USA Today | 29 Oct 2021 |
Perils for spelunkers | ||
Miner concerns | ||
Utter capitulations | ||
Mine disasters | ||
Spelunker's concerns |