On This Date In History

On September 19, 1957, the United States detonates a 1.7-kiloton nuclear weapon in an underground tunnel at the Nevada Test Site (NTS), a 1,375-square-mile research center located 65 miles north of Las Vegas. The test, known as Rainier, was the first fully contained underground detonation and produced no radioactive fallout. A modified W-25 warhead weighing 218 pounds and measuring 25.7 inches in diameter and 17.4 inches in length was used for the test. Rainier was part of a series of 29 nuclear weapons and nuclear weapons safety tests known as Operation Plumbbob that were conducted at the NTS between May 28, 1957, and October 7, 1957.
In December 1941, the U.S. government committed to building the world’s first nuclear weapon when President Franklin Roosevelt authorized $2 billion in funding for what came to be known as the Manhattan Project. The first nuclear weapon test took place on July 16, 1945, at the Trinity site near Alamogordo, New Mexico. A few weeks later, on August 6, 1945, with the U.S. at war against Japan, President Harry Truman authorized the dropping of an atomic bomb named Little Boy over Hiroshima, Japan. Three days later, on August 9, a nuclear bomb called Fat Man was dropped over Nagasaki. Two hundred thousand people, according to some estimates, were killed in the attacks on the two cities and on August 15, 1945, Japan surrendered to the Allied Powers.
1957’s Operation Plumbbob took place at a time when the U.S. was engaged in a Cold War and nuclear arms race with the Soviet Union. In 1963, the U.S. signed the Limited Test Ban Treaty, which banned nuclear weapons testing in the atmosphere, underwater and outer space. A total of 928 tests took place at the Nevada Test Site between 1951 and 1992, when the U.S. conducted its last underground nuclear test. In 1996, the U.S signed the Comprehensive Test Ban Treaty, which prohibits nuclear detonations in all environments.

 

 

 

 

 Nevada Test Site - North End Of Yucca Flat

 

 

On September 19, 1941, as part of their offensive campaign in the Soviet Union, German bombers blast through Leningrad’s antiaircraft defenses, and kill more than 1,000 Russians.
Hitler’s armies had been in Soviet territory since June. An attempt by the Germans to take Leningrad (formerly St. Petersburg) in August by a massive panzer invasion had failed. Hitler had wanted to decimate the city and hand it over to an ally, Finland, who was attacking Russia from the north. But Leningrad had created an antitank defense sufficient to keep the Germans at bay, and so a siege was mounted. German forces surrounded the city in an attempt to cut it off from the rest of Russia. (Finland eventually stopped short of an invasion of Leningrad, happy just to recapture territory it had lost to the Soviet invasion in 1939.)
The halt of the German land attack and the withdrawal of the panzer divisions to be used elsewhere did not stop the Luftwaffe from continuing to raid the city. (“The Fuhrer has decided to have St. Petersburg wiped off the face of the Earth,” declared Hitler to his generals.) The air attack of the 19th was particularly brutal; many of those killed were already recuperating from battle wounds in hospitals, which were hit by German bombs.
The siege of Leningrad would last a total of 872 days and would prove devastating to the population. More than 650,000 Leningrad citizens died in 1942 alone, from starvation, exposure, diseases, and artillery shelling from German positions outside the city. The only route by which supplies could enter the city was via Lake Ladoga, which entailed sleds negotiating ice during the winter. But the resources that got through were only enough to prolong the suffering of the Leningraders. Even tales of cannibalism began leaking out of the city. Soviet forces were finally successful in breaking the siege in January 1944, pushing the Germans 50 miles from the city.
Among those trapped in the city was an air-raid warden born in St. Petersburg named Dimitri Shostakovich, who wrote his Seventh Symphony during the siege. He was eventually evacuated and able to perform his masterwork in Moscow. The U.S. premiere of the piece raised relief funds for the desperate Russians.