When the metal coating is punctured or scratched, the capsules in the damaged area burst and ooze restorative liquids, in the form of compounds called trivalent chromates.

Many more are missing after rushing waters sparked a deadly landslide and a river burst its Banks; uprooted trees and debris ploughed through the area.

However, when we calculate the area under this curve, we see that the short burst approach accomplished: 38 units of work!