It affects all "extraction" industries, including natural gas, coal, copper, diamonds and possibly timber.

FORBES: Seeing Through Big Oil

The Elimination of Double Subsidies for the Hard rock Mining Industry Act takes on depletion allowances for mineral extraction based industries.

FORBES: Connect

Still, the MIT report points out that shale-gas extraction uses less water than other industries, and indeed than other sources of energy.

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Count 'em up: Asia, Latin America, the Middle East and the former Soviet Union, as well as industries like forestry, mining, agriculture and energy extraction.

FORBES: Sharpening the claws

The list included funds that invest in oil sands or "fracking" industries, as well as others that invest in uranium and silver extraction.

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But extraction is, as the saying goes, a different kettle of fish from most industries.

FORBES: Law of This Sea