Mezue ahịrịokwu na-esonụ: Ụlọ ọrụ abụọ ahụ na-ewu ụlọ bụ ndị na-elekọta ụzọ ahụ na Mont Blanc. Na-eso a
ọkụ na 1999 nke mmadụ 39 nwụrụ, nke gosipụtara etu enweghị nkwekọrịta nwere ike isi mee ka nchekwa nke ọwara ahụ ghara ịdị, a na-ejikwa otu ụlọ ọrụ: MBT-EEIG, nke ma ATMB na SITMB na-achịkwa, site na nkesa 50 <unk> 50 mbak.