is live with the latest for us. reporter: the building where the site is is red tagged warning it s not safe to go inside. it s been 24 hours since adrian martin was killed inside. investigators are still trying to figure out how something like this could have happened. adrian martin s family is too distraught to talk on camera, mourns his loss in their san jose home. it s the nature of research to be doing something new and different. there is some risk. uc berkeley professor says someone with martin s background as a chemical engineer most likely took precautions, but says there is often risk in cutting edge research. they may have been trying to do something different, pressurizing, mixing the gases in a particular way, and pressurizing a cylinder that may not have been purged off the air. and there might have been residual air or oxygen. the 56-year-old was mixing methane, helium and nitrogen for an experiment on friday afternoon, when a tank containing one of
reporter: so that its good news right there. this company works with natural gas and petrochemicals. one person dead. one injured. we will stay on scene and find out more for you. for more breaking news here in menlo park. bay area news. george, we ll stay with you throughout the hour. there its another gassish to in cupertino. it happened wednesday destroying a condo. fear and questions remain. pg & e, found seven gas leaks in the cuppertino neighborhood. marianne favro joins us live. seven weeks in the small area. what is to say another explosion won t happen again? reporter: well they are doing more thorough inspections right now staying out to make sure. obviously there is no guarantee unless you inspect every single gas line. i want to show you how strong the explosion was on wednesday. if you take a look behind me. you will see that it ripped the garage door right off the hinges. and if you look above, you will see that the entire balcony was scorched. that is why