Elgin Courier Online, Elgin Texas

Elgin Courier Online, Elgin Texas: "most cities use hydrofluosilicic acid. 'It is highly corrosive. I've seen a few drops of it eat straight through a six-inch thick slab of concrete when spilled. It requires our operators to wear acid protective clothing and breathing apparatus, so I do have concerns about our operators handling a hazardous material daily,' said Prinz."