My name is Mel Johnson, and i am a former employee of the holly (former Conoco Phillips) refinery of Woods Cross,UT. I have many years experience with the chemicals including fuel oil there. If anyone would like to know everything about fuel oil or any other chemical, every bit of information about any chemical, is found in the (material Safety Data Sheet)MSDS. This information is found online, and in the control room at the refinery, they are required by O.S.H.A. to keep it there. In my experience with fuel oil there we were taught that it along with every other chemical there that if were ingested could be very hazardous, which is why food and drinks were not allowed in operating areas, and tank farms where fuel oil was stored, and/or had a potential of exposure. All chemicals are hazardous. We was taught that Fuel oil can absorb through the skin causing extreme illness or worse depending on the person. Therefore if fuel oil got onto somebodys skin or they ate a vegtable from thir garden that fuel oil landed on I would take a deep concern in that, and seek medical help immediately.