 Moodys Investors Service, Moodys affirmed CONSOL Energy Inc.s B1 Corporate Family Rating CFR, B1-PD Probability of Default Rating, Ba3 senior secured ratings, and its B2 senior secured notes rating. The Speculative Grade Liquidity Rating was lowered to SGL-3 from SGL-2. CONSOL Energy will need to move aggressively to preserve credit quality in a very challenging environment for thermal coal producers, said Ben Nelson, Moodys Vice President -- Senior Credit Officer and lead analyst for CONSOL Energy, Inc. 