Helicopters airdropped emergency supplies Tuesday to Himalayan villages worst-hit by a quake that killed at least 81 people in India, Nepal and Sikkim, while earthmovers pushed through debris clogging precipitous valleys. The quake killed at least 50 people in Sikkim, said the state's top official, Karma Gyatso. India's Home Secretary R. K. Singh told reporters that 12 people were killed in West Bengal and six others in Bihar state. Authorities in neighboring Nepal reported six deaths, while China's official Xinhua news agency reported seven deaths in Tibet. In Nepal, officials said six people were killed when houses collapsed near the capital Katmandu, bringing down an earlier figure of seven deaths due to the quake, according to a report of the Associated Press.