| osha.gov | OSHA Regulations & Compliance Links |
| osha-slc.gov | U.S. Department of Labor Occupational Safety and Health Administration |
| cagi.org | Air Compressors Compressed Air and Gas Institute CAGI |
| ase.org | Alliance to Save Energy (ASE) |
| aircompressors.com | Air Technologies, Inc. |
| ashrae.org | American Society of Heating, Refrigerating, and Air-Conditioning Engineers |
| ridgeenergystorage.com | Ridge Energy Storage & Grid Services |
| pbworld.com | Compressed Air Energy Storage (CAES) |
| nasvf.org | Houston company to build Ohio unit using old mine shaft |
| hydrodynamics-group.com | C.A.E.S. Technology/hydrodynamics Group, Llc |
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