Snow-making catalyst is safe, experts say

Silver iodide used in process 'will not pollute or endanger human health'

The heaviest snowfall of the winter, which hit northern parts of the country last week, was augmented by artificial snow-making technology, the China Meteorological Administration said.

From Wednesday to 3 pm on Friday, 720 snow-making operations had been carried out in nine provincial-level regions across northern China. Hebei and Shanxi also conducted 17 snow-making operations via aircraft, the administration said on its website.