Pick the rock considered as soft rocks for tunnelling. Explanation: Rocks considered as hard and crystalline are granites, syenites, gabbros, basalts and all the related igneous rocks, sandstones, limestones, dolomites, quartzites etc. What is tunnel and its types? There are three basic types of tunnel construction in common use: Cut-and-coverRead More →
A collapsed dorsal fin means the orca is unhealthy, unhappy or malnourished.In captivity, all adult male orcas have collapsed dorsal fins, which clearly is a sign that captivity is not a place for these creatures. … Orcas have lived as targeted species for over 50 years, with 48 orcas dyingRead More →
In the early 1920s while Germany was suffering through economic hardship there were a series of uprisings, rebellions and political assassinations. Two main rebel groups formed: A left wing communist group called the Spartacus League and a right-wing group called the Free Corps. Why was inflation so bad in GermanyRead More →
As many as nine victims, or about 10% of the death toll, remained alive and buried under the mountains of debris after parts of the 12-story residential building in Surfside, a quiet neighborhood just outside of Miami Beach, caved in on June 24 around 1:25 a.m. According to fire logsRead More →
1923. Hyperinflation was one of the major problems plaguing Germany’s Weimar republic during its last years of existence. Reaching a monthly inflation rate of approximately 29,500 percent in October 1923, and with an equivalent daily rate of 20.9 percent it took approximately 3.7 days for prices to double. Why wasRead More →
The decline in overall economic activity was modest at first, but it steepened sharply in the fall of 2008 as stresses in financial markets reached their climax. From peak to trough, US gross domestic product fell by 4.3 percent, making this the deepest recession since World War II. What crashedRead More →
The family’s condo was on the ninth floor of the 12-story Champlain Towers South in Surfside, Florida. Initially, 150 people were thought to be missing. “That was a very difficult night,” Scheinhaus said. But her mother, Angela Gonzalez, and her sister, Deven Gonzalez, did survive. How many people survived theRead More →
Bad design. Faulty construction. Extraordinary loads. Foundation failure. Unexpected failure mode. Natural disasters. Soil liquification. Demolition through explosives. How many people died in Miami building collapse? Topline. Over a month after a condominium complex near Miami abruptly collapsed overnight, local officials said Monday they’ve identified the remains of a finalRead More →