MONTPELIER, Vt. (AP) -- Vermont Gov. Peter Shumlin on Wednesday signed into law the nation's first ban on a hotly debated natural gas drilling technique that involves blasting chemical-laced water deep into the ground.
The Democrat, surrounded at a Statehouse ceremony by environmentalists and Twinfield Union School students who pushed for the ban, said the law may help Vermont set an example for other states. The ban may be largely symbolic, though, because there is believed to be little to no natural gas or oil beneath the surface in Vermont.
The gas drilling technique, called hydraulic fracturing, or fracking, involves the high-pressure injection of water and chemicals into the ground to split rock apart and release natural gas or oil.
It's being used extensively in the rapidly expanding natural gas industry in several states. Critics have blamed the practice for contaminating drinking water wells of some residents living near the drilling operations, but natural gas industry officials dispute those claims.
Shumlin said the increased amounts of natural gas obtainable through hydraulic fracturing were not worth the risk to drinking water supplies.
In the coming generation or two, "drinking water will be more valuable than oil or natural gas," Shumlin said.
"Human beings survived for thousands and thousands of years without oil and without natural gas," he said. "We have never known humanity or life on this plant to survive without clean water."
Shumlin then appeared to contradict himself, saying other states should emulate Vermont's ban on hydraulic fracturing but also should be the "guinea pigs" for testing the process.