CUSIP No. 67612W108 AGREEMENT CONCERNING JOINT FILING OF AMENDMENT NO. 1 TO SCHEDULE 13D The undersigned agree as follows: (i) each of them is individually eligible to use Schedule 13D to which this Exhibit is attached, and such Schedule 13D is filed...Agreement Concerning Joint Filing of Amendment No. 1 to Schedule 13d • November 23rd, 2004 • Fairfax Financial Holdings LTD/ Can • Fire, marine & casualty insurance
