Supertech's Noida twin towers razed to ground

The Supertech twin towers in Noida were demolished, a year after the Supreme Court's direction to raze the illegally built structures. The nearly 100-metre-high structures were brought to the ground in seconds by the 'waterfall implosion' technique. The explosives took around 10 seconds to ignite and another four to six seconds for the structure to crumble. Over 3,700 kg of explosives was used and expected waste generation is more than 30,000 tonnes.