During the rescue and post-operations of the 2008 Sichuan earthquake , heavy equipment needed to be transported to deal with the dangerous formation of quake-lakes located in extremely difficult terrain , particularly at Tangjiashan mountain , which was accessible only by foot or air . A China Flying Dragon Special Aviation Company 's Mi-26T heavy lift helicopter was used to bring heavy earth-moving tractors , fuel , and equipment to the affected location to create a sluice to relieve the dangerous quake-lake
2008 Sichuan earthquake
2008 Sichuan earthquake
China Flying Dragon Aviation