Alta Resources, LLC is a private company headquartered in downtown Houston. Founded in 1999, Alta has been a leader in the exploration for and development of shale oil and gas assets from the Fayetteville Shale in Arkansas and the Marcellus Shale in Pennsylvania to the liquids-rich Duvernay Shale play in the Kaybob area of Alberta, Canada. George P. Mitchell, who is widely regarded as the father of shale gas for his pioneering role in developing the Barnett Shale in Texas, was a longtime partner with Alta prior to his passing.