Ku dhammaystir weedha soo socota: Falanqaynta shilalka waaweyn ee ku dhacay qaybo badan oo kala duwan oo bulshada ka mid ah waxay muujinayaan in khaladaadka qarsoon ay khatarta ugu weyn u yihiin nabadgelyada nidaam adag. Shilalka noocan oo kale ah waxaa ka mid ah
Shilkii Three Mile Island, Musiibadii Heysel Stadium, Musiibadii Bhopal, Musiibadii Chernobyl, Musiibadii Space Shuttle "Challenger", King's Cross dabkii, "Piper Alpha", iyo MS "Herald of Free Enterprise".