Plant closing and notice period questions - any advice?

I received a formal notice about a mass layoff at my workplace. I have been trying to stay organised about it. Some colleagues are already leaving. Has anyone been through this?

Thanks for writing this out. I went through something close to it 4 months ago, and it settled down once I kept a simple log of every call and form.

Start your search early. I wish I had begun the day of the notice.