0000908737-07-000041 8-K 2 20070124 8.01 9.01 20070124 20070124 IRON MOUNTAIN INC 0001020569 4220 232588479 DE 1231 8-K 34 001-13045 07550497 745 ATLANTIC AVENUE BOSTON MA 02111 6175354766 745 ATLANTIC AVENUE BOSTON MA 02111 IRON MOUNTAIN INC/PA 20000201 PIERCE LEAHY CORP 19960807 8-K 1 imis_8k.htm IMIS 8K JANUARY 24, 2007 EX-4.1 2 ex4-1.htm EX4-1