Mezue ahịrịokwu na-esonụ: Ike ọgwụgwụ n'ihi ọrụ e ji arụchi anya so kpata ọtụtụ ọdachi ndị metụtara ọrụ mmepụta ihe, gụnyere ihe ọghọm nke Three Mile Island, ọdachi nke Space Shuttle Challenger na ọdachi Chernobyl. Alaska Oil Spill Commission's final report on the
Ọdachi mmanụ a wụfuru n'ụgbọ mmiri "Exxon Valdez" gosiri na ọ "ga-ekwe omume" na oge ọrụ gabigara ókè so mee ka ike gwụ ndị ọrụ ụgbọ mmiri ahụ, bụ́kwa nke so mee ka ụgbọ mmiri ahụ kpọkaa.