Buuxi weedha soo socota: Daalkii ka dhashay shaqada shiftiga ayaa sabab u ahaa musiibooyin badan oo warshadaha ka dhacay, sida shilkii Three Mile Island, shilkii Space Shuttle Challenger iyo shilkii Chernobyl. Warbixintii ugu danbaysay ee guddiga shidaalka ee Alaska
Shilka shidaalka ee "Exxon Valdez" wuxuu ogaaday inay "la aqbali karo" tahay in saacadaha shaqada ee xad dhaafka ah ay gacan ka geysteen daalka shaqaalaha, taas oo iyana gacan ka gaysatay in markabka uu ku sii socdo.