Opponents fear a spill would be a disaster, being difficult to clean up in icy seas.

CNN: Why we should look to the Arctic

Banking messes are horribly difficult to clean up unless the bankers, businessmen and government officials responsible face penalties, especially where, as in Japan, they have committed crimes as well as made blunders.

ECONOMIST: Japanese banking

Environmental groups argued against the project, warning that a spill would be difficult to plug and clean up in the remote and inhospitable Arctic.

CNN: Ice floe halts Shell's new Arctic well

Monday's events show how difficult it will be to clean up local police forces.

WSJ: Mexico Cracks Down on Local Police Corruption

Difficult conditions have led the utility company to evacuate around 730 of the 800 workers from the site, making clean up and safety operations even harder to perform.

FORBES: Connect