try it. shake lightly and crush the dry ice up into super small chunks/dust so the ice doesn't crush the material up too much. the 45 micron run is the most amazing super light yellow stuff I've ever seen. When switch to 220, When a hint of green starts to come through, start shaking a new pile, and use that for cooking. I have a usb scope, I'll see about posting something later if I can find it.

if you are going to buy dry ice... a few pounds of dry ice is enough to process a bunch of material. BUT, it disappears quickly (a 10 lb bag will pretty much disappear in 24 hrs), so don't buy the dry ice until you are ready to go.