Simplified Space Marine Helmet

I found Mailbombers simplified Space Marine helmet (https://www.thingiverse.com/thing:2377374), but it's one file with all 16 parts in it. Since no slicer I'm used to can cut that up for me, I decided to try out MeshMixer to cut the one file into 16 individual files for people facing the same problem.
I'm really new to all this, so don't expect this to be the best version that might have been created.
It'd be nice to separate the helmet into more logical components (to take out the face plate