... Inc. is issuing $675 million in debt to prefund the expected investment in its Port of Toledo hot briquette iron (HBI) plant. Construction is slated to begin in 2018. + Over the past year, Cliffs has benefitted from elevated iron-ore prices and has reduced reported debt by over $550 million. + As a result, we are affirming our 'B' corporate credit rating on Cliffs. We are revising the outlook to negative from stable. + We are also assigning our '##-' issue-level rating to the company's proposed $400 million guaranteed senior secured notes due in 2024. + The negative outlook reflects our expectation that iron-ore prices will fall closer to $55 per dry metric ton (dmt), which along with the additional debt will weaken credit metrics over the next year. DALLAS (S&P Global Ratings) Dec. 5, 2017--S&P Global Ratings today affirmed its 'B' corporate credit rating on Cleveland-Cliffs Inc. in connection with the company's announced issuance of $675...