Russell C. Thomas

Sintana Holdings Corp. engages in the petroleum and natural gas exploration and development. Its exploration strategy is to acquire, explore, develop and produce superior quality assets with significant reserve potential. Sintana Holdings was founded on September 7, 2006 and is headquartered in Plano, TX.

Call-Net Enterprises, Inc. was an e-communications company which provided data, e-business and voice services for businesses and consumers primarily through Sprint Canada, Inc. Rogers Communications, Inc. acquired Call-Net Communication and on July 7, 2005, Sprint Canada, Inc. officially became Rogers Telecom, Inc. and Call-Net Enterprises, Inc. became Rogers Telecom Holdings, Inc. Headquartered in Toronto, Canada, Call-Net owned and operated an extensive national network with operations in the United States and the United Kingdom