This was in response to the Quebec Bridge Disaster in which 75 workmen died due to faulty engineering calculations and miscommunication.
[2] The ritual was created in 1922 by Rudyard Kipling at the request of Haultain, representing seven past-presidents of the Engineering Institute of Canada.
Fairbairn met with Harry F. McLean, president of Dominion Construction and Kipling in Montreal at the Ritz-Carlton Hotel to discuss the details of the ritual.
The Ritual and the conferring of the Iron Ring continues to be administered by The Corporation of the Seven Wardens Inc./Société des Sept Gardiens inc. through camps[7] associated with the universities granting degrees in engineering in Canada.
Following the Obligation, the Iron Ring is placed on the little finger of the working hand,[3] and is worn by the engineer as a symbol and a reminder.
Designer Darrell Freeman's "head-to-foot" layout incorporates the symbolic iron ring that is presented as part of the ceremony.
The Corporation of the Seven Wardens (French: Société des Sept Gardiens) is the body that holds the rights and the duty to carry out The Ritual of the Calling of an Engineer.