Mikhail Lavrov Mikhail Lavrov Mikhail Andrianovich Lavrov () (1799–1882) was a Russian rear-admiral and Arctic explorer. Mikhail Lavrov was born on 13 September 1799 in the city of Arkhangelsk. He graduated from Cadets Corps in Saint Petersburg and served at the Baltic Fleet. He participated in the voyage of the cargo ship "Mezen" from Kronstadt to Arkhangelsk and back in 1819–1820. In 1821–1824, in the rank of senior officer, he participated in the expedition of Fyodor Litke on board of the brig "Novaya Zemlya", making description of coast line of Murmansk and Novaya Zemlya archipelago. In 1825–1827, he made a round-the-world voyage
Novaya Zemlya Novaya Zemlya. The launch rocket was subsequently deployed to Cuba. 1963 saw the implementation of the Limited Test Ban Treaty which banned most atmospheric nuclear tests. The largest underground test in Novaya Zemlya took place on September 12, 1973, involving four nuclear devices of 4.2 megatons total yield. Although far smaller in blast power than the Tsar Bomba and other atmospheric tests, the confinement of the blasts underground led to pressures rivaling natural earthquakes. In the case of the September 12, 1973, test, a seismic magnitude of 6.97 on the Richter Scale was reached, setting off an 80 million ton