Hi just got a call from a custy that she has a pc of slate in front of her fire place and it has stains on it. I asked her if it was oil and she said she does not know. Any ideas what it could be and any solutions (I THOUGHT IT COULD BE SMOKE BUT THE STAINS WERE CIRCULAR IN SHAPE)<br clear="all">
&nbsp; THANKS<br>-- <br>Zev Guez<br>Stone Restoration Plus<br>(732) 309-3878<br><a target="_top" href="http://www.stonerestorationplus.com">www.stonerestorationplus.com</a><br>