Inaugurating a stall on disaster management at India International Trade Fair here, Reddy said people of Delhi, which has witnessed several low magnitude quakes in recent times, have to prepare for the natural disaster as it was difficult to predict when an earthquake would occur.
"We do not want to create panic but want to make people alert," he told reporters here.
"If an earthquake of magnitude 8 occurs in the Himalayan states, eight to nine lakh people may lose their lives," the NDMA vice-chief said.
The entire Himalayan region is seismically very active and during a span of 53 years between 1897 and 1950, four major earthquakes, (Shillong -1897, Kangra -1905, Bihar-Nepal -1934 and Assam -1950) exceeding magnitude 8 on the Richter scale occurred in the region causing vast devastation.
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Reddy said when and where such an earthquake would occur is not known and therefore, the best approach to face such an eventuality was to work for developing an earthquake-resilient society.
The main attractions of the stall are different types of materials including information, education and communication materials and Do's and Dont's on various natural and human induced disasters, publications and Ludo game on Earthquake, which has been developed indigenously.
An Earthquake shake table model, various search and rescue equipment have also been demonstrated. A street play on disaster management will be performed from November 19 to create disaster awareness amongst communities.