The famous Blasto Brothers firm is demolishing a huge sports stadium. To ensure that no one is injured, the Blasto Brothers go very far beyond all safety requirement for the demolition--the spend several million more on safety for the demolition than any other demolition firm would have spent, and they make use of the best demolition safety experts in the world, who closely supervised the demolition and directed the firm to use every possible measure to prevent any possible injuries to the public, to neighboring buildings, to the demolition workers, etc. Despite these safety precautions, the demolition causes a small piece of metal to fly through the safety nets and more than 1,000 feet from the explosion, where that piece of metal blinds an innocent citizen who was walking to work well outside the roped-off safety zone set up by the Blasto Brothers.

Explain whether and why the Blasto Brothers may be held liable for the injury to that citizen far from the blasting zone. Be sure to explain in detail the precise required elements of any tort and any applicable legal principles.