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Ohio Air Quality Development Authority -- Moody's withdraws the ratings of USG

Moody's Investors Service ("Moody's") has withdrawn USG Corporation's Ba2 Corporate Family Rating, Ba2-PD Probability of Default Rating, and the SGL-1 Speculative Grade Liquidity Rating. Moody's also withdrew the Ba2 (LGD4) rating assigned to the company's senior unsecured debt, and the B1 (LGD6) rating assigned to its senior unsecured revenue bonds.