| Company | Category | Area | Address | Web | E-mail | Contact person |
| HYDROCAD SOFTWARE SOLUTIONS | Comp Sftwre & Acc | New Hampshire | 216 CHOCORUA MOUNTAIN HWY, CHOCORUA, Carroll, New Hampshire, 03817-4402, USA |
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| HYDROCAP CORP | Mfg Gas Recombining Battery Ve | Florida | 975 NW 95TH ST, MIAMI, Miami-Dade, Florida, 33150-2033, USA |
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George Peroni |
| HYDROCAP CORP | Cur-Carrying Wir Dv | Florida | 975 NW 95TH ST, MIAMI, Miami-Dade, Florida, 33150-2033, USA |
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GEORGE PERONI |
| HYDROCAPITAL CORP | Financial Advisory Services | New York | 60 E 42ND ST, NEW YORK, New York, New York, 10165-0006, USA |
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| HYDROCARBON DATA SYSTEMS INC | Computers-System Designers & C | Texas | 13831 NORTHWEST FWY STE 316, HOUSTON, Harris, Texas, 77040-5205, USA |
www.hds-log.com |
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Mark Manley |
| HYDROCARBON ENGINEERS | Oil,Gas Exploration | Wyoming | 330 S CENTER ST STE 317, CASPER, Natrona, Wyoming, 82601-2875, USA |
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C K ADAMS |
| HYDROCARBON ENGINEERS | Oil & Gas Exploration & Develo | Wyoming | 330 S CENTER ST STE 317, CASPER, Natrona, Wyoming, 82601-2875, USA |
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C K Adams |
| HYDROCARBON ENVIRONMENTAL | Safety Consultants | Texas | 800 ROCKMEAD DR STE 113, HUMBLE, Harris, Texas, 77339-5019, USA |
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John Sexton |
| HYDROCARBON FLOW SPEC INC | Nonclassified Establishments | Texas | 2345 BERING DR, HOUSTON, Harris, Texas, 77057-4749, USA |
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| HYDROCARBON GENERATION | Oil & Gas Exploration & Develo | New York | PO BOX 220, ALLEGANY, Cattaraugus, New York, 14706-0220, USA |
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Donald Benson |
