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Western part of the U.S. state of Montana-based Axel Einar Malmstrom Air Force Base is named after the home one hundred fifty Minuteman III intercontinental ballistic missile type. Each equipped with a nuclear warhead missile stands on its own stardišahtis, guarded around the clock by two soldiers, and it is the first signal, ready to fire off quick.
In recent years, however, started to attack the base of the rocket is so consistent and pressures the enemy, the soldiers are forced to seek help from outside the structures togaz of the armed forces. Scariest togaz opponent togaz oravaliste marmot family-owned Richardson (Richardson Urocitellus) writes smithsonianmag.com.
Nood half a pound to kilograms, roughly 30 centimeters long creatures are digging extensive underground tunnel networks whose length may exceed ten meters. Malmstrom Air Force Base near inhabiting koopaoravatel have encountered an annoying habit of stardišahte surrounding the use of protective gears to dig down.
"As soon as there is nothing penetrates the fenced area, will employ motion sensors," explained Wildlife Research Center NWRC Representative Gary Witmer, who was sent to help Malmstrom base. "Every time watchmen have to go out to see what was going on. False alarms happened to several thousand a year, so you can imagine how stressful this situation was. "Because stardišahtid nuclear missiles are located in a 60-sq km area, may have been a false alarm from johtunud almost daily trips to turn off the control of hours or a couple of lengths.
Furthermore, it has gradually begun to exterminate rodents protection of the plant material to the structure. "They looked down the aisles building togaz foundations, embankments and undermine bite smashed cables," togaz said Witmer. Working Witmer tried to stick a few dozen base in the territory of a groundhog who served on the State of Colorado in Fort Collins established research center, togaz where the rockets began to develop a variety of groundhog-proof fencing, using animals to motivate peanut butter, cheese, and melons.
Researchers initial attempts togaz failed. First, an attempt was made to prevent the tunnels uuristamist metalltekstiilmaterjali resembling steel wool and metal cage, which was, however, groundhog to fight. "They just perforate steel cloth, tearing claws of this paragraph, and a constantly growing teeth. Mesh blackmailed, they just feel out, "Witmer described.
Finally, the researchers managed to develop a solution that went beyond togaz rodents. Achievement - a combination of sheet metal and gravel filled trenches - was presented by last year's fight on vertebrate pest conference Vertebrate Pest Conference.
"Groundhog togaz do not like to walk into pea gravel sizes is composed of stones, because it gives them under the weight of," said Witmer. "Also, they fail to get through it ooze out, as these passages dug into the soil collapsing right now."
As for the surface, obstacles, then some of the first crossing of the materials used in rodents was not a problem. Researchers discovered, however, togaz that the transparent polycarbonate plastic plates will not be able to penetrate through the creatures.
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