I remember Haliburton coming to frack a well when I was in High school in Kentucky, 1964. They brought 2 tankers and a huge pump truck, it had a allison aircraft engine that ran the pump. The engine was covered with 2 hinged covers and when they started the engine it blew the covers open. Open exaust, very loud. They hooked the hoses to a well head and pumped the chemicals into it. The wells there hardly went deeper than 500 or 600 ft. I remember the ground shaking after they pumped for a while. It was mostly sandrock in that area and several months later while rabbit hunting we stopped at a spring where a barrel had been burried many years prior to get a drink, the water was very salty and stinky but not with the crude oil look. Always before this water was as good as you could find taste wise. Not sure if it was the fracking but I suspect it was.