...+ American Rock Salt Co. LLC is borrowing an incremental $80 million under its $350 million first-lien term loan maturing in 2021. Proceeds will be supplemented with balance sheet cash and applied toward prepaying the company's $120 million second-lien term loan due 2022. + We are raising the corporate credit rating on American Rock Salt to 'B' from 'B-'. At the same time, we are revising the recovery ratings on the company's first-lien debt to '3' from '2' and affirming the 'B' issue-level rating on the debt. + The company's stable outlook reflects our view that credit measures will remain within the current range over the next 12 months. NEW YORK (Standard & Poor's) May 15, 2015--Standard & Poor's Ratings Services said today it raised its corporate credit rating on Restof, N.Y.-based American Rock Salt Co. LLC to 'B' from 'B-'. The outlook is stable. We also affirmed our 'B' issue-level rating on the company's first-lien debt, which includes the $80 million add-on, and revised the recovery...