This will add several buildable signs of an industrial safety theme.

v 0.7
67 Wall Signs and Posters (26 vanilla, 41 custom)
7 A-Frames (3 custom, 4 vanilla)

Added in 0.7:

Spoiler:  

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Wall signs are all under Wall Decorations > Signs
A-Frames are under Misc Decorations > Misc

Coming Soon
More Posters!
Will continue to expand the selection
More Signs!
Will continue to expand the selection

Install
Either use Nexus Mod Manager or:
Extract everything to the Data folder and enable OSHA_Signs.esp

Uninstall
Disable/delete OSHA_Signs.esp
Remove Materials/BS_OSHA, Meshes/BS_OSHA, and Textures/BS_OSHA

Conflicts
None currently known - Adds nothing that should cause a conflict
Tested with Homemaker and Alternate Settlements.
Should be compatible with anything using Stuyk's Settlement Keywords, but it isn't required.