| 10/8/2008 | BKHY | S&P: HydroChem on developing watch
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| 3/19/2008 | BKHY | S&P rates HydroChem loans B+, CCC+
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| 7/13/2007 | BKHY | S&P affirms HydroChem loans
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| 7/10/2007 | HY | HydroChem extends tender offer for 91/4% senior subordinated notes due 2013
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| 6/21/2007 | BKHY | Moody's rates HydroChem loans Ba3, B3
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| 6/19/2007 | BKHY | S&P rates HydroChem loans B+, CCC+
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| 5/31/2007 | HY | HydroChem extends consent solicitation for 91/4% notes again
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| 5/24/2007 | HY | HydroChem extends consent solicitation for 91/4% notes
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| 5/9/2007 | HY | S&P drops HydroChem outlook to stable
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| 5/7/2007 | HY | Moody's lowers HydroChem outlook to stable
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| 10/23/2006 | HY | Moody's ups HydroChem outlook to positive
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| 9/25/2006 | BKHY | Moody's introduces new ratings
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| 7/6/2006 | DDHY | S&P raises HydroChem Industrial view to positive
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| 11/21/2005 | HY | S&P affirms HydroChem, off watch
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| 9/28/2005 | HY | S&P lowers HydroChem, notes, on watch
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| 2/9/2005 | HY | Market Commentary: HydroChem, Mercer price deals; Star Gas, Muzak fall sharply
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| 2/9/2005 | HY | New Issue: Hydrochem $150 million eight-year notes yield 91/4%
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| 2/8/2005 | HY | Hydrochem $150 million eight-year notes talked 91/4% to 91/2%
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| 2/8/2005 | HY | Market Commentary: Valor, Builders FirstSource price upsized deals; Level 3 lower on "uncertain" 2005 outlook
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| 2/2/2005 | HY | S&P: HydroChem cut to negative, notes rated B-
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| 1/31/2005 | HY | HydroChem Industrial Services to launch $150 million eight-year notes Tuesday
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| 1/31/2005 | HY | Market Commentary: MCI bonds continue to firm as SBC bags AT&T; Uno Restaurant prices, Mauser upsizes euro deal
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| 1/31/2005 | DDHY | Moody's rates HydroChem notes Caa1
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