Mezue ahịrịokwu na-esonụ: N'afọ ndị 1970, Hourani bụ onye ọsụ ụzọ nke iji ihe a na-eme ka ọ dịkwuo mma maka ịmanye slabs na ọkwa na mgbidi na-akwado. N'afọ 2002, Hourani mepụtara windo windo ndị e mere iji guzogide ajọ ifufe nke 4 na nke 5; o chepụtara nkà na ụzụ maka mmanụ skimmer nke sitere na ọdachi mmanụ Exxon Valdez na 1989 na Alaska.
2010 Deepwater Horizon oil spill na Ọwara Oké Osimiri Mexico.