Assigned Seats

Our company is moving to a new building sometime in the next month (they've said for the past 10 months).  Today, a co-worker was tasked with showing each team member the floor plan, explaining where each department will be located, and asking each team member where he/she would like to sit.

When the floor plan came around to me, the co-worker discovered the section of the paper that listed which department I was in was cut off. We could only see the bottom third of the letters. 

"What does it say?" he asked me.  "Where are you supposed to sit?"

I studied the broken letters carefully and replied, "I'm pretty sure the letters are I R O N T H R O N E."