Steam explosion major cause of human fatalities in volcanic eruptions. The 1986 Chernobyl nuclear disaster in Soviet Union was feared to cause major steam explosion (and resulting Europe-wide fallout) upon melting the lava-like nuclear fuel through the reactor's basement towards contact with residue fire-fighting water and groundwater. The threat was averted by frantic tunneling underneath the reactor in order to pump out water and reinforce underlying soil with concrete. When a pressurized container such as the waterside of a steam boiler ruptures, it is always followed by some degree of steam explosion. A common operating temperature and pressure for a marine boiler
Czechs in Ukraine Czechs in Ukraine Czechs in Ukraine, often known as Volhynian Czechs (Czech: "Volyňští Češi"), are ethnic Czechs or their descendants settled mostly in the Volhynia region of Ukraine, in the second half of the 19th century. Between 1868 and 1880, almost 16,000 Czechs left Austria-Hungary for the Russian Empire. The reasons for their departure were the difficult living conditions in the Czech lands, and the rumors of prosperity in the Russian realm, where there was a large amount of unused agricultural land. After the collapse of the Polish January Uprising against Russian rule (Volhynia was part of Poland prior to