I got a bunch of rocks from a friend of mine as a trade for some work. Used them in my yard for some landscaping and just found out after I finished that they are serpentine and filled with Asbestos. I did a bunch of research about the serpentine rock, and just about everything had to do with crushed rock and rock dust from gravel that is made of serpentine. My question... What I used them for in my yard shown in the picture, does anybody know if this is a health hazard? I know nothing about this, I do little landscaping, most of the work I do is tree work and weedabatement, so any advice would be appreciated. I have a little boy, and will get rid of it ASAP if it is a danger... but if the big rocks don't pose a risk then I'd love to keep them, they are some of the coolest looking rocks I've seen for landscaping. Thanks a bunch guys!