Berry said he ran home to get his raincoat, then assisted rescuers by directing traffic.
He added he wanted to help his rescuers to get the safety message across.
But rescuers were unable to move the heavy debris under which they were trapped.
Rescuers said the boy, who was visiting the area with his family, was uninjured.
Rescuers say they have no idea how long it might take to reach the men.
Rescuers have been able to pull some bodies and survivors from the rubble of devastated villages.
Mr Torres Lopez is said to have communicated with rescuers tapping and hitting the walls.
Rescuers were still busy early Tuesday morning searching the mostly submerged craft for survivors.
The entire area where Kyson was found had been searched once, and rescuers found nothing.
They included a baby and rescuers said they had burned furniture to keep warm.
He said rescuers are working into the night trying to get to the trapped U.N. workers.
But wind, snow and ice meant rescuers decided to delay recovering the body until Saturday morning.
Rescuers have been hampered by freezing weather, altitude sickness and risks of further landslides.
Zoo officials said rescuers used a fire extinguisher to separate the man and the animal.
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Some had cell phones that they were able to call and tell rescuers where they were.
The open letter also contained a plea for any potential rescuers to get in touch.
For the rescuers and volunteers seeing a pet reunited with its owner fuels their effort.
During the day Friday, the rescuers found the body of the rescued boy's sister.
Rescuers then used listening devices and cameras at the scene, but found no signs of life.
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It is understood the three climbers involved were buried in the snow when rescuers found them.
Rescuers flew four critically wounded people to two hospitals, air rescue spokeswoman Karine Hoerhager said.
My rescuers also saved others: a deaf mute, a Russian widow with children, and other Jews.
It took rescuers more than two hours to get all the passengers out of the bus.
Mr Jones said rescuers strongly advised walkers to carry several layers of spare clothing.
By Friday evening, rescuers had recovered the bodies of a child and a woman.
By then, professional rescuers arrived and took over the job of looking for survivors.
Rescuers were searching for survivors in basement of the large office tower, Osorio Chong said.
The beam, found in the wreckage of the World Trade Centre, was a totem for rescuers.
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Rescuers found the body of the last missing child early on Friday, state media reported.
Safety aside, the dam upstream from Dujiangyan is the staging post for rescuers heading toward the epicenter.
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