Opal's clients include nationwide Fortune 500 companies and non-regulatory government agencies. These entities retain Opal's services on refineries, manufacturing facilities, mines, resorts, parks and recreation and transportation/terminal facilities. Representative clients include:
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ARCO | ![]() |
Miller-Weingarten Realty, L.L.C. |
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Bureau of Land Management | ![]() |
Mountain Coal Company West Elk Mine |
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Colorado Dept. of Transportation | ![]() |
PricewaterhouseCoopers, L.L.P. |
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E-470 Highway Authority | ![]() |
Regional Transportation District (TREX) |
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Flint Hills Resources, L.P. | ![]() |
Starwood Corp. (Westin) |
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General Electric Company | ![]() |
Umetco Minerals Corporation |
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Georgia Pacific | ![]() |
UNOCAL |
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Hayward Baker, Inc. | ![]() |
Utah Division of Oil, Gas and Mining |
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Hertz Corporation | ![]() |
W.R. Grace & Company |
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Honeywell International, Inc. | ![]() |
Western Refining Yorktown, Inc. |
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INVISTA | ![]() |
Weston Solutions, Inc |
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Koch Industries |