Grandfathered plants, built before the state's Clean Air Act in 1971, are bigger polluters than newer ones, accounting for 36% of the chemicals Texas releases into the atmosphere each year.

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The Safy Mountain range is of strategic importance because it overlooks the Bagram air base, which was built by Soviet forces during the Soviet Union's war with Afghanistan in the 1980s.

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The crane alone took two years: It's all hand-built, but it's capable of lifting a two-ton safe 30 feet in the air.

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