Gold and silver extraction, which generally involves trickling diluted cyanide over crushed rock, has sometimes caused serious environmental problems.
That is why the large group national resources and mining is listed, along with both mining and oil and gas extraction, which are parts of that group.
Some activists concentrated on a rare late-term procedure known among doctors as "intact dilation and extraction," which activists called "partial-birth abortion".
Another extreme resource extraction method is a strip-mining process known as tar sands oil extraction, which destroys entire ecosystems where they lie.
One potentially promising area to apply Ms. Koller's theoretical work will be the emerging field of information extraction, which could be applied to Web searches.
At issue is the ban that criminalizes a procedure called intact dilation and extraction, which can be used to terminate pregnancies after the first trimester.
French observes that in many places the Chinese are essentially stepping into old colonial patterns of resource extraction, which causes resentment among locals.
Shale-gas extraction, which represented one per cent of U.S. natural-gas supplies in 2000, made up thirty per cent of the total last year.
He was excited by the similarities between syrup making and natural gas extraction, which both rely on pressure differentials.
The video certainly makes the facts stark and at times very political: "We'll start with extraction, which is a fancy word for natural resource exploitation, which is a fancy word for trashing the planet," she says at one point.
The space is rough-hewn, with bare wood tables and floors, dangling lightbulbs, an open kitchen and the haze that comes from extraction which can't quite cope, or doesn't want to.
