Our Story

Disa, LLC is an innovative materials liberation company providing solutions that optimize the world’s use of resources and radically disrupt best practices in the mining and reclamation industries. Disa utilizes patented liberation technology and other equipment to isolate targeted materials in order to deliver efficiencies, reduce costs, and mitigate environmental impacts to its users. Disa platforms isolate a vast array of geologic material ranging from precious and industrial metals, to hydrocarbons and abandoned uranium mine material.

Our team strives to deliver on our goal of being a clean and responsilble technology in the mining and reclamation spaces.






Greyson serves as the CEO & President where he formulates, communicates, implements, and evaluates the company’s mission and strategic objectives. Greyson previously served as the Director of Policy for Mesa Natural Gas Solutions, a T. Boone Pickens owned company, where he oversaw business development and regulatory affairs. Prior to that, he worked on Capitol Hill for several years, externed for a federal judge, and helped run a U.S. senate campaign. Greyson is a licensed attorney in Wyoming, a Field Artillery officer in the Wyoming Army National Guard and a Distinguished Military Graduate of the ROTC Cowboy Battalion. He has deployed to Kuwait (Operation Spartan Shield) and Iraq (Operation Inherent Resolve) where he earned the ARCOM with “C” device. Greyson received both his B.A. in History and Government and M.A. in American Government from Georgetown University. He received his J.D. and MBA in Energy Management from the University of Wyoming, where he graduated with honors and was recognized as the Bedont Outstanding Graduate Student. He serves on the Board of Directors for the No One Left Behind Foundation, a national non-profit that helps Afghan and Iraqi combat interpreters with Special Immigrant Visas (SIVs) resettle safely in the United States, is on the Board of Directors for the Centennial Hills Homeowners Association, is a member of the Rotary Club of Casper, and serves on the Georgetown Alumni Admission Interview Committee.



John is currently on academic leave. Previously, John served as the Director of Operations for a startup where he helped drive revenue and profit to achieve the company’s ambitious growth. Prior to that he worked for Hess Oil, where he analyzed subsea completions in the offshore Gulf of Mexico region and identified key areas for improvement and methods for the supply chain team to apply lean strategies. John received his B.S. in Marketing with a minor in Mathematics and his MBA in Energy Management from the University of Wyoming. John is also a Ph.D. candidate in Mining Engineering at the University of British Columbia where his research focuses on the valorization of mining wastes and how emerging technologies can be used for the recovery of critical materials from mining wastes with consideration of economic and social impacts. John lives in Casper, WY and is excited about Disa’s potential to be an environmentally sustainable technology in the mining and reclamation spaces.



Tara serves as the General Counsel of Disa, LLC. She is also an Associate Professor at the University of Wyoming College of Law and is the director of the Academic Program in Professional Land Management within the School of Energy Resources. Before joining academia, Tara served as general counsel and in executive management in a privately held upstream oil and gas company. Tara is a Certified Professional Landman and is licensed to practice law in Texas and California. She received her BA in Environmental Design and her juris doctorate from the University of Colorado Law School. She is a trustee at large of the Rocky Mountain Mineral Law Foundation, serves on the executive committee of the Wyoming Association of Professional Landman, and serves on the Board of the Albany County Safe Project.



Dr. Cook serves as the Director of Finance where he manages the finances, budget, and cash flows of Disa. He is also responsible for financial forecasts and project economics. Dr. Cook is the Senior Energy Economist for Wyoming’s Enhanced Oil Recovery (EORI) with a dual appointment as an Instructional Professor in the University of Wyoming’s Economics Department. He currently serves as the Interim Assoc. Director of UW’s Center for Business & Economic Analysis (CBEA) which is being established in the College of Business. Dr. Cook specializes in applied energy economics, and project financial evaluation. His subject matter work includes: oil and gas operations, enhanced oil recovery (EOR), CO2 capture, storage and utilization (CCUS), electricity generation, performance benchmarking and economic impact assessment. Most of Dr. Cook’s work is in partnership with various public and private entities to derive actionable insights for policymakers and business decision makers, including working as a collaborator on several U.S. Department of Energy (DOE) grants. Dr. Cook received his PhD and Bachelor’s in degrees from the University of Wyoming, has passed CFA Level I in the Chartered Financial Analyst program and is a sought-after speaker and educator.



Dr. Sanja Miskovic serves as a Technical Advisor where she is responsible for the alignment of Disa’s technology strategy with its business strategy. She formulates and oversees process design and data gathering work and proactively identifies and improves technical issues. She is also an Assistant Professor of Mineral Processing at the University of British Columbia with teaching and research experience in particle processing, minerals engineering, waste minimization and recycling, and fuels preparation and processing. Sanja has 15 years of experience in mineral processing plant operation and technology development with a particular focus on circuit diagnostics, modeling, and optimization, and novel particle technologies development, testing, and scale-up. Though her research, Sanja is utilizing combination of numerical and experimental studies to understand the relationship between energy input, flow dynamics, machine design, and process efficiency of various particulate processing units. Dr. Miskovic earned her Ph.D. in Mining and Minerals Engineering from Virginia Tech and her Bachelor’s and Master’s degrees in Chemical and Environmental Engineering from the University of Novi Sad, Serbia.






BOARD MEMBER - Currently on academic leave





Mr. Lustbader serves as a Director for Thermopolis Partners LLC, a Wyoming-based investment partnership. Thermopolis’ mission is to discover and develop companies that leverage emerging technologies to disrupt the natural resources market. Mr. Lustbader spearheads Thermopolis’ European efforts from the company’s branch office in Prague, Czech Republic. Previously, Mr. Lustbader worked for Elementyx consulting in Brazil, private equity firm Friedman Fleischer & Lowe, and Morgan Stanley’s investment banking unit. Mr. Lustbader holds a J.D. from the New York University (NYU) School of Law and a B.S. from Cornell University. He speaks English and Portuguese.

Marc LeVier has an extensive background in the mining industry with over 45 years’ experience. He has a B.S. and M.S. degree in Metallurgical Engineering from Michigan Technological University and a Doctorate of Science (Hon) from Montana Tech at the University of Montana.

Mr. LeVier has worked for mining companies in operations and in the development of new mineral deposits including base metals, precious metals, iron ore, uranium and rare earths.

Mr. LeVier retired in 2011 after a long career at Newmont Mining Corporation, where he was the Global Director of Metallurgical R&D. His research teams delivered innovative solutions and process technology for new mineral deposits, which significantly increased the profitability and global operations portfolio of Newmont.

After Newmont, Mr. LeVier became the CEO, President and Director of Texas Rare Earth Resources Corporation and later, the CEO, President and Director of Great Western Minerals Group LTD. Mr. LeVier provided leadership in the development of multidiscipline project teams and successful advancement of the projects.

Mr. LeVier is currently President, K. Marc LeVier & Associates, Inc., which provides services to the mining industry.



Rob has over 27 years of experience focused on mineral and energy resources development in the Rocky Mountain region with emphasis on environmental site assessment, remediation, regulatory permitting & compliance, and water resource development & management. 

After consulting as well as working for energy development and environmental consulting firms from 1982 to 1998 he formed InterTech Environmental & Engineering, LLC in 1999 and was the managing partner and Senior Hydrogeologist. He sold InterTech to Apex Companies in 2015 and currently works for them as a client Program Manager. 
He is a registered Professional Geologist in Wyoming and has a B.S. in Petroleum Geology ‘82 and an M.S. in Hydrogeology and Water Resources ’96 from the University of Wyoming.



Born in Glendive, Montana, I followed my family, first to Tucson, Arizona then to Minneapolis, Minnesota, where, after high school, I broke away, traveling to college at University of California, Berkeley, where I received a BS in Chemistry (with honors) and then off to grad school at MIT.

Making good use of my science background, motivated by a hungry family, I found a job as a management trainee in a community bank in Chicago. Thirty five years and two jobs later, I retired from an 18 billion dollar bank group as President and COO. 
Most of my career had involved managing the credit function.

During my stay in Chicago, I spent 20 years on the board of an organization called LINK. LINK’s raison d’être is to face the challenges of education in the African American community by mentoring the students and financing their education in a private school environment. Of the approximately 70 freshman entering the program each year, 60 or so graduate from high school and 100% of those that graduate go on to college, most with 100% scholarships. During my 20 years on the board, I helped five students, most of whom are my friends today.

I currently live in Kelly, Wyoming with my sweet wife Lynne. We encourage long and frequent visits from my three children and their five kids, somewhat successfully.



Mr. Mortimer is an investment associate at OceanSound Partners, a middle-market private equity firm that invests in U.S. based technology and technology-enabled services companies operating in business-to-business and business-to-government end markets. Prior to OceanSound, he was an analyst at Credit Suisse in the Financial Sponsors Group. While at Credit Suisse, he focused on providing various financing solutions for both corporate and private equity clients across a variety of industries. Mr. Mortimer began his professional career as an analyst at J.P. Morgan in the Commodities Sales and Structuring Group. He graduated with a B.S. in Finance and a minor in Economics from Georgetown University. Mr. Mortimer serves on the junior committee for the Boys’ Club of New York.