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And virtually all the fastest growth urban regions—Houston, Dallas-Ft.

The city employs three times more people in energy than its second place rival, Dallas-Ft.

In contrast many red state metros such as Houston, Oklahoma City, Salt Lake, and Dallas-Ft.

Not cool stuff like jewels or the gold in Ft. Knox, just words and pictures.

So far, three test flights of the SS2 have only managed altitude of around 71,000ft - approximately 13 miles.

The snow line gradually sinks as one advances north-west, reaching only 2000 or 3000 ft. on the Alaskan coast.

In some recent masonry arched bridges of spans up to 150 ft. built with hinges considerable economy has been obtained.

It had spans of 172 and 193 ft., and may be taken as a representative type of bridges of this kind.

It is only since metal has been used that the great spans of 500 to 1800 ft. now accomplished have been made possible.

At first girders had solid or plate webs, but for spans over 100 ft. the web always now consists of bracing bars.