Subsidiary | Jurisdiction of Incorporation or Formation | |||||||
Service Transport Company | Texas | |||||||
Ada Crude Oil Company | Texas | |||||||
Ada Mining Corporation | Texas | |||||||
Classic Coal Corporation | Delaware | |||||||
GulfMark Energy, Inc. | Texas | |||||||
Adams Resources Medical Management, Inc. | Texas | |||||||
Ada Resources, Inc. | Texas | |||||||
Red River Vehicle Holdings LLC | Texas | |||||||
Victoria Express Pipeline L.L.C. | Texas | |||||||
GulfMark Terminals, LLC | Texas | |||||||
ARE Captive, Inc. | Texas | |||||||
Firebird Bulk Carriers, Inc. | Texas | |||||||
Phoenix Oil, Inc. | Texas | |||||||
GulfMark Asset Holdings, LLC | Texas |