KBR will work to bring both the extraction facilities and mine development into commercial production, working jointly with US Oil Sands.

In October 2013, US Oil Sands has closed an $81m financing for the PR Spring project, which will allow to focus its attention on project execution.

US Oil Sands CEO Cameron Todd said the company is able to draw on KBR’s significant oil sands, mining, equipment module and plant construction experience to ensure that budgets and timelines are tightly controlled.

"We remain 100% committed to making this flagship oil sands project one that the State of Utah will be proud of, especially as it relates to environmental leadership, sustainable energy development, and beneficial economic contribution for the citizens of Utah," Todd added.

US Oil Sands, through its wholly-owned US subsidiary US Oil Sands ( Utah ), has a 100% interest in bitumen leases covering 32,005 acres of land in Utah’s Uinta basin.