It's at least 80+ years old, I started with a jack hammer but it stopped breaking off in chunks once it got this low. 

I have been using a 12" concrete cutter to cut width ways to weaken it.

Is there a better way to lower this to floor level instead of slowly cutting lines like I have been doing?

 Any advice would help as my backs starting to give up being crouched for hours on end

Better picture with the cutter I'm using

Hopefully you are using a mask and earplugs

Yeah definitely got goggles/mask/gloves etc, but no extraction fan so having to only do 1 or 2 lines at a time to avoid major dust clouds

i'd use a rotary hammer and chisel it level

Well you're about there, you should apply water as you cut, helps if you have someone hold a pump sprayer and applying while you're cutting. Concrete dust is dangerous. You might be able to get away with using a hammer chisel at this point.

Just noticed it's an electrical cutter, dint use this with water. Just get a chipping hammer at this point. Should be able go rent pretty cheap from a hardware store

Crystalline silica and concrete dust in a confined space = no beuno. If you absolutely must do it dry then go get yourself an extraction fan, even a cheap box fan can help. If the ventilation still sucks then run a cheap air purifier. Even a Bionaire from Walmart will do a surprisingly good job filtering particulates in a small space.

>>2599140 (OP)

>Any advice would help as my backs starting to give up being crouched for hours on end



Attack it say two or three days a week instead of being in a hurry. It was there before an you didn't die.



So get big ass shop vac and filter the exhaust (panty hose doubled helps) or just buy a fan.
