Mosman Oil and Gas (MSMN) has formally engaged independent consultant Sproule ERCE to undertake a competent person's report on the Coyote Wash project in Colorado.
The engagement of Sproule follows Mosman's recently announced internal best estimate of the prospective 2U helium resources at Coyote Wash at 1,072 million cubic feet.
This estimate spanned six mapped Leadville helium prospects on the project.
Sproule will assess helium, CO₂ and hydrocarbon resources across eight mapped structures, with a final report expected in late November 2025.
This would then provide Mosman with its second verified helium resource in Colorado, following Sproule's independent verification of the Sagebrush project in September.
To achieve this, Sproule will review Mosman's technical dataset, including 3D seismic interpretation, petrophysical analysis, and well data from the Coyote Wash 30-12 well and offset analogues.
The scope of work includes a full CPR of the prospective helium, CO₂ and hydrocarbon resources across eight mapped structures in the project area, using Sagebrush reservoir parameters as an analogue.
"We're very pleased to again be working with Sproule, this time to verify our internal helium resource estimate at Coyote Wash,” said Howard McLaughlin, chief executive of Mosman.
“This review will mark Mosman's second independently verified helium resource, following Sproule's certification of Sagebrush earlier this year - a major milestone that reinforces the credibility and depth of our Colorado portfolio. Coyote Wash already represents over one billion cubic feet of best-estimate helium resources across six defined prospects. Independent verification will provide additional confidence in those figures and allow us to advance detailed planning for drilling and development. With two verified helium projects, one drilled and cased well ready for testing, and 3D seismic expected to commence this quarter, Mosman is now in a strong, strategic position - ahead of many peers in terms of resource definition and proximity to potential production. We're building a substantial helium business with clear momentum and tangible value catalysts
View from Vox
Mosman has been motoring ahead with its US helium projects in the past few months, working up official numbers and readying them for further development work. Sproule provided a fairly conservative estimate for Sagebrush, so expect it to be conservative again at Coyote Wash. Nonetheless, the numbers are large and the potential economics are very attractive. There’s infrastructure all around, and Mosman’s team are very experienced. So lots to be positive about here.