Trench rescue: The importance of approach
How to use ground padding and bridging in your rescue operation
There are a lot of variations on how to approach a trench and make the area safe to commence shoring and rescue operations. I think a consensus is developing amongst some of the technical groups regarding what that approach should look like.
As I unload some of this info here, it is important to underscore that these recommendations are based on solid foundational engineering and safety concepts. These are not revolutionary new concepts; they are just commonly dismissed or overlooked.