About three months ago, the roof caved in at my work due to poor structure and heavy rain. I was told to come in early to help gather up equipment. I arrived and I saw everyone standing outside, I was told a structural engineer had to come and verify the buildings integrity. My boss then told me to go inside and gather the equipment and it didn't matter what the safety manager said because our boss wanted it done. We had no proper PPE, there were computers and wires everywhere in the water. This felt very unsafe to me, my boss then turned it on me saying if I felt uncomfortable I should have said something. A. I know that wouldn't have mattered as he didn't care what the safety manager said. B. A manager should know this is a risk, regardless of how low, that can wait until the proper people check out the building. I spoke to the safety manager who then explained to me that upper management always disregards what he says. There were employees in front of the building crying because they were so scared to go back but are also too scared to speak up.