...+ Iron Mountain Inc. plans to issue 300 million senior unsecured notes due 2025 and use the proceeds to pay down revolver balances. + We are affirming our '##-' corporate credit rating on the company. + We are also assigning our '##-' issue-level rating and '3' recovery rating to the company's proposed notes. Our ratings on the company's other debt are unchanged. + The stable rating outlook reflects our expectation that Iron Mountain will continue to experience mid- to low-single-digit percentage revenue growth and improve its operating margins through efficiency initiatives. We also expect lease-adjusted leverage to moderate to the low-5x area and FOCF to debt to remain above 5% through 2018. NEW YORK (S&P Global Ratings) May 16, 2017--S&P Global Ratings said today that it affirmed its '##-' corporate credit rating on Boston, Mass.-based global storage and information management services company Iron Mountain Inc. The rating outlook remains stable. At the same time, we assigned our '##-'...