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Family Enterprises:

Mack Oil Co.
Fourgen, L.L.C.
South OK Development Co., L.C.
EnerWest Trading Co., L.C.
McCasland Foundation
Investors Trust Company

Lafayette Office

3861 Ambassador Caffery Pkwy
Suite 500
Lafayette, LA 70503

Duncan office

1202 N. 10th St.
Duncan, Ok 73533

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