My old boss used to say a clean worksite is a sign you're not looking hard enough for the real problem. That extractor is great for the airborne stuff, but @rowan972 has a point about what you might be missing. On a job like that, I'd be worried about what's in the dust itself, like old lead paint or asbestos fibers that settle into the floor cracks. The HEPA filter catches it, but you still have to deal with the settled layer it leaves behind.

My bin was a swamp until I tried what @emma344 said.

That sander's probably older than my marriage.

My buddy in Tucson had to call his man cave a "home office" for a tax write-off. The whole system is built on these little white lies. I got my deck approved as a "safety upgrade" because the old one was wobbly. It's all about finding the right words that make the bean counters happy, even if the grill is still just for burgers.

Man that sounds rough. Been there with the total blackout bilge water, it's the worst. For that kind of gunk you need a stupid amount of lumens, like a proper dive light. Forget the cheap hardware store stuff, it just bounces back. I've had good luck with the big heavy duty LED ones from marine suppliers, they can actually cut through the soup.