The Supertech twin towers in Uttar Pradesh's Noida came crashing down within a span of nearly nine seconds after the use of 3,700 kg explosives on Sunday, thus ending a nine-year-long legal battle. Demolition of Supertech's twin towers in Noida on Sunday, The towers, Apex and Ceyane, which are taller than the Qutub Minar in the national capital, were 100 …