Those killed were thought to have been scavenging through a mountain of waste rubble dumped by mechanical diggers used by mining firms in the area to extract Myanmar's most valuable precious stone.
The massive landslide crushed dozens of flimsy shanty huts clustered on the barren landscape, where an unknown number of itinerant workers had made their homes in the hope of finding riches on the side of the secretive multi-billion dollar jade industry in war-torn Kachin state.
"We are seeing only dead bodies and no one knows how many people live there," he told AFP, adding that only one person had been pulled alive from the rubble, but had died soon after.
Myanmar is the source of virtually all of the world's finest jadeite, an almost translucent green stone that is prized above almost all other materials in neighbouring China.
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Scores have been killed this year alone as local people say the mining firms, many of which are linked to the country's junta-era military elite, scale up their operations in Kachin.
Nilar Myint said rescuers workers from the Myanmar Red Cross, the army, police and local community groups were all at the scene trying to dig people out of the earth, but their efforts have been hampered by poor weather conditions overnight in the remote region.
But that figure is around 10 times the official USD 3.4 billion sales of the precious stone last year, in an industry that has long been shrouded in secrecy with much of the best jade thought to be smuggled directly to China.