Mosman Oil & Gas has released an internal best estimate for the helium resource at its Coyote Wash project in Colorado. Using a conservative methodology laid down by independent consultants Sproule, Mosman reckons the overall resource at Coyote Wash to be a little over a billion cubic feet of helium. That's big, chief executive Howard McLaughlin tells Vox, and there could still be some upside. Sproule will now come in to come up with a more official number, as Mosman presses on with further development work