Good morning PST2. I haven't sold any yet. I am at break even now ...finally. I found this company some years ago while looking at some of Robert Friedland's companies. This Tech at PROP...I believe...Is the same as what RF is using at his I-Pulse company in oil and mining. Here is a link http://www.ipulse-group.com/Technologies You will have to copy and paste the link. After seeing RF using it around the world where he has the rights...I am hanging on and...May...add a Lil more...Only what I can afford to lose. Read through the linked info above,especially the oil related stuff. Hard to believe in it not working if RF is using it in so many ways.....Bluetick