https://www.ncsfri.org/product-page/trench-rescue-principles-and-practices-to-nfpa-1006-and-1670-4th-edition
Trench Rescue: Principles and Practices to NFPA 1006 and 1670 4th Edition | NCSFRI
principles and practicestrench rescue
https://allfirefighter.com/post/rescue/trench-rescue-soil-classification-shoring-guide
Trench Rescue Guide: Soil Classification, Shoring & Operations-Level Response
Apr 13, 2026 - Trench rescue: why trenches collapse, OSHA soil types A/B/C, protective systems, initial response actions, secondary collapse prevention, and victim care.
trench rescuesoil classificationguideshoringoperations
https://www.fox10phoenix.com/news/rescue-crews-free-man-trapped-in-trench
Rescue crews free man trapped in trench | FOX 10 Phoenix
Rescue crews in Prince George's County have rescued a man who was trapped in a trench in Greenbelt.
free manrescuecrewstrappedtrench