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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

Louisiana District

3861 Ambassador Caffery Pkwy
Suite 500
Lafayette, LA 70503

Mid-Continent District

1202 N. 10th St.
Duncan, Ok 73533

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