In the liabilities section of its 2010 balance sheet, Bank of America reported noninterest bearing deposits of over $285 billion. Bank of America is a very large banking company. In the liabilities section of its 2010 balance sheet, Newmont Mining Corporation reported reclamation and remediation liabilities of more than $984 million. Newmont Mining is involved in gold mining and refining activities. In its 2010 balance sheet, Delta Air Lines largest current liability reported was $3.3 billion for air traffic liability. 

Required: 

a. For each of the preceding liabilities, write a brief explanation of what you believe the nature of the liability to be and how the company will pay it off. To develop your answers, think about the nature of the industry in which each of the companies operates.

b. Of the three liabilities described, which do you think poses the most risk for the company? In other words, for which liability are actual costs most likely to exceed the liability reported on the balance sheet? Uncertainty creates risk.