play sand dust and such is quite bad for you to breathe.
Silica and all. I'm still going through my supply of black beauty. That reminds me. my mask needs new filters.
Bear, i might be interested. I think you have an upgraded version of what i have. You dont run any sort of vacuum setup with it? I dont really like my box too much, but i make it work. Mine has a flat bottom, i hate that.