Rubuta ci gaba don wannan sakin layi - Gajiya saboda aikin sauye-sauye ya ba da gudummawa ga bala'o'i na masana'antu da yawa, gami da haɗarin Three Mile Island, bala'in Space Shuttle Challenger da bala'in Chernobyl. Rahoton karshe na Hukumar Ruwan Man Fetur na Alaska game da zubar da man fetur na "Exxon Valdez"
bala'i ya gano cewa "yana yiwuwa" cewa yawan lokutan aiki ya ba da gudummawa ga gajiyawar ma'aikatan, wanda hakan ya ba da gudummawa ga jirgin ruwan da ke gudana.