What action would be necessary to prevent a cave-in?

Descartes’s 6 meditations
July 29, 2019
Both Hick and Cave claim that the idea of resurrection is somehow incoherent, or unintelligible. Apparently, the source of that problem ultimately lies in confusing Resurrection with Reanimation. Do they have that right?
July 29, 2019

What action would be necessary to prevent a cave-in?

Question Description

You are a safety manager for a civil contractor building new sewer lines for the city. Your company must excavate a trench 6′ deep and 12′ wide and install the concrete sewer pipe. What would be your first step in providing a safe work area? What would be the mechanics of a cave-in? What action would be necessary to prevent a cave-in?

Your response must be at least 500 words in length.