They still would be friends

Aperture is the company that invented Portals (that evidently don't need to go near the dangerous mess that is Xen) while making shower curtains, made repulsion and propulsion gels by accident while trying to make dietary supplements, and as recently revealed, made an automated sentry gun out of a toilet.

Or if you're looking for relatively more mundane hazards, don't forget that they created an ultra-murderous AI and gave it access to Neurotoxin. And while they don't have radioactive waste, all the lower levels are lined with asbestos.

Black Mesa has nothing on Aperture in the clown department.