It's still possible to find places to work that aren't like that, SNORGY.
There's a right and a wrong way to raise safety concerns, which I thankfully learned on my 2nd co-op work term rather than in a situation with more serious consequences for doing things the wrong way. I was working in a process development lab, and the president, a very petulant and disrespectful and pompous PhD, had decided that we were going to do some tests using a very, very dangerous compound. The young fresh grad engineer who had procured the material and was tasked with carrying out this work was in tears, feeling that she'd been given a choice to do the work or lose her job. After reviewing the MSDS, which contained memorable phrases like "...those who have survived exposure report that the compound has a musty odour...", I approached our boss- a mid level engineer who reported to the a-hole president- and asked her to tell me the day these tests were being done so I could be absent that day- as a student, putting my life on the line for work wasn't something I was willing to do, and it was clear to me that my poor colleague felt that refusal wasn't an option for her.
What our boss pointed out has stuck with me to this day: the error that both the young engineer and poor dumb student me had made, was to assume that she would ever let those experiments take place if she felt the work could not be done safely. Instead, I should have said, "In order to do this work safely, it appears to me that we need the following equipment, procedures, facilities etc. etc. that we clearly do not have. Is there a plan to obtain these necessary safety provisions prior to the work, or do you have another plan?" By putting it that way, we wouldn't be arrogantly and unfairly presuming that she was a callous and unethical person who would compel us to proceed despite legitimate safety objections, which was definitely not the case with her (but certainly could have been the case with her boss in my opinion!).
There's definitely a right and a wrong way to raise safety concerns, and it is always the WRONG WAY to presume that the person in question would condone the carrying out of an unsafe act once they knew how and why it was unsafe. The good news is that none of us lost our jobs, and that the experiments were never done. The petulant guy got distracted by something else and forgot about it I guess.
As to putting it in writing: it is a courtesy to have those sorts of conversations verbally first. Putting it in writing for the record and requiring a written response is what you do after the conversation shows a probability of failure to communicate. But continuing with progressive measures, which if necessary may include your departure from the company and/or acting as a whistleblower, is an ethical and legal responsibility of a professional engineer. It needs to be taken seriously, but it also needs to be carried out properly and tactfully.