They now bring groups through the desert, often along trails once used by Pancho Villa's army.
Nextel began as a crazy quilt of local radio networks once used for taxi dispatch services and the like.
One example of the problem: U.S. soldiers once used bits from ancient Babylon to fill sand bags.
Military tunnels, built manually by soldiers and once used to transport landing craft, have become an attraction for strolling tourists.
Qarga's lakeside compound was once used by the royal family and has since been converted into a government-owned resort.
The pool house still has wooden rods once used to hang drying tobacco.
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Once used by rafters and home to wild salmon, the river now runs in culverts constrained by highway fortifications.
Elephants were once used in large numbers to transport wood from the forest.
Visitors today can pray inside a small cave chapel once used by shepherds, located about 100m past the entrance gate.
Hydrochloric acid was once used to retrieve metals from rock, but many firms abandoned it for cost reasons for cyanide.
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Mark picked up the iPad and saw many icons, each signifying a different app, what once used to be a site.
Officials are asking for millions of dollars of public money to build a park on land once used by the railroads.
The three-story matzo oven once used by Aron Streit and Rabbi Weinberger remains in the house to this day, unused for decades.
Just one year ago, it was a relatively low-value piece of Manhattan real estate once used as a factory for manufacturing coats.
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Once used primarily by businesses, these tokens are also sold to consumers.
The defendant passed around business cards announcing himself as the 13th Baronet of England and once used the name Mountbatten, he said.
The Second Avenue tunnels hold a space-age surprise: The ceilings are coated with a material once used to fireproof the space shuttle.
There are old speaking tubes from pre-electricity days and sleeping porches, which were once used in warmer months before air conditioning was the norm.
Animals that were once used for bait or that were considered worthless (hagfish, sea cucumber) were later taken in large quantities for human consumption.
Coating tools once used to put films on sheets of glass are being tweaked so they can also rapidly coat thousands of individual wafers.
To replace them, employers will have to come up with the sort of flexible deals they once used to attract women back to work.
Labour has bounced back from its electoral flattening at the last general election making gains in the places Tony Blair once used to reach.
Cornwall, in southwest England, has long besotted visitors with its historic port villages, broad sandy beaches, high cliffs and secret coves that were once used by smugglers.
It will be accessible through the back entrance once used by gladiators, with a new glass lift sinking down into the bowels of the building.
If you were expecting that same kind of unbridled enthusiasm Crazy Eddie once used to hawk underpriced TVs, you may be either pleased or disappointed.
Other finds include the bone comb once used by an image conscious lough dweller and a metal blade which is still sharp after hundreds of years.
Indian aviation regulators on Tuesday agreed to allow aircraft leasing companies to retrieve more than a dozen jets once used by grounded Kingfisher Airlines Ltd.
Search has also replaced the time and energy we once used to find resources with the time-consuming task of evaluating all the sources that are out there.
The words were once used by Maltese children to taunt the Tunisian vendors who visited their villages over 50 years ago, two generations before that football game.
There's no reason, he says, that radio can't at least be as accurately measured as television, which once used the same methodology but eventually switched to electronic measurement.
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