normally, that is an easy question to answer by conducting the minimalist amount of research and effort. but being you are new (lots of newbies lately, and for known reasons), i will provide some assistance with a very quick google search. here is what i found for you:
iridium - (chemical symbol Ir), it is the 77th element
ir - the internet country code top-level domain for Iran
injured reserve - a reserve list for professional teams to use if a player is injured and unable to play for an extended time
or
infrared (ir) - a portion of the electromagnetic radiation spectrum
being that USPR is an exploration company, your best choice would be iridium as it could possibly be found near gold, silver, or copper.
Doesn't really matter. IR stated recently that the results would be announced very, very soon. Then 2 hours later, USPR announced the results would be delayed 45 to 60 days. So basically, IR knows nothing about what goes on at USPR.