I have been doing some winterizing of my home for the last few weekends. I knew my attic had a lack of insulation so i scoped it out. I found fiberglass batts in the rafters, i lifted one up to find this pour in granular looking stuff underneath. After some investigation it looks to be vermiculite. And after researching this product, i find 80% of this used before 1990 was contaminated with asbestos. Here is the real problem, our furnace is located in the attic. We burn wood for the majority of our heat, but do kick on the furnace in the morning and it may come on throughout the night. I am so scared that i may be filling my home with this crap. I took a sample of it and am having it tested but, some bags of this contained asbestos and some did not. Depending on the vein it was produced from. So the word is it you have this vermiculite in your attic, pretty much treat it like it is contaminated. I know it costs about $8 a square foot to have this removed by an asbestos abatement team. It could even go up to 10K 20K. I was really stupid when buying this home. I did not have an inspection. Most of what i have read says its considered safe if not disturbed. I an considering heating with nothing but wood until i can find out more. Any suggestions or advice will be greatly appreciated.