| | | | | | | | O | |
ONEOK, Inc.
[OKE]
| | | P | |
PAA Natural Gas Storage, LLC
[PNG]
Piedmont Natural Gas Company, Inc.
[PNY]
| | | Q | |
Questar Corporation
[STR]
| | | R | |
RGC Resources, Inc.
[RGCO]
| | | S | |
Sempra Energy
[SRE]
South Jersey Industries, Inc.
[SJI]
Southcross Energy Partners, L.P.
[SXE]
Southwest Gas Corporation
[SWX]
Suburban Propane Partners, L.P.
[SPH]
Summit Midstream Partners, LP
[SMLP]
| | | T | |
The Laclede Group, Inc.
[LG]
TransCanada Corporation
[TRP]
Transportadora de Gas del Sur S.A.
[TGS]
| | | W | |
WGL Holdings, Inc.
[WGL]
| |
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