JOINDER TO AGREEMENT AND PLAN OF MERGER This Joinder to Agreement and Plan of Merger (this "Agreement") is made and entered into as of October 31, 1997 by and among Iron Mountain Incorporated, a Delaware corporation ("Acquiror"), IM-3 Acquisition...Joinder to Agreement and Plan of Merger • November 10th, 1997 • Iron Mountain Inc /De • Public warehousing & storage • Massachusetts
