Perhaps you were looking for one of these?

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• BEPX BioFuel Energy Corp, Pioneer Trail Energy LLC.
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• DCBX Degussa Engineered Carbons, LP
• ECQX Degussa Engineered Carbons, LP
• HAMX Hams Beer
• MCVX Massuchusetts Call/Volunteer Firefighters Assoc.
• PCTX Pioneer Cement Company of Texas
• PIOX Pioneer Americas LLC
• MIEU MI Engineering Ltd
• APRA Alberta Pioneer Railroad Association