\section{Data}
The technical feasibility reports of uranium mines in Wyoming are reviewed to create a data set of mine operation plans. The type of data reported varies, based on the jurisdiction of the companies headquarters, and the phase in development of the cite. Projects under the purview of the \ac{NRC}. In total the technical reports of 15 Wyoming in situ operations were reviewed. Of these only five provide sufficient cost estimates for analysis \footnote{Seven projects are in the preliminary evaluation phase, or are otherwise not required to provided economic estimates by the State of Wyoming. Three projects are in the development stage and provide geologic data, as well as exploration costs, but not operating plans. The remaining five projects provide enough data to establish a net present cost estimate of groundwater Restoration.}. These projects have some spatial diversity coming from five different counties and at least to major different uranium plays.
 

The \ac{CNSC} requires mines to provide technical reports before beginning operation. These reports include a schedule of mine operation, with project drilling, restoration, and labor costs in each year, along with forecasted revenues from uranium recovery. While not all Wyoming mines are required to report this information, four operating projects in the State are fully or partially owned by a Canadian mining company such as Cameco. The operations with these fillings include the Gas Hills Project in Fremont County, the Lost Creek Project in Sweetwater county, the Shirley basin project in Carbon County, and  the  Moores Ranch Project in Campbell and Johnson counties \citep{moores2021,westernwaterconsultantsinc2024,westernwaterconsultantsinc2024a,malensek2022}.

The \ac{NPV} of each category of cost and revenue is discounted with a baseline assumption of 10\% private return. A cash flow model for each mine is created, that allows \ac{NPV} to be calculated variables of uranium price, restoration costs, internal return rate, operating costs, and up front costs. This is used to create sensitivity analysis of profits. 

The final report comes from a \ac{NRC} surety bond filling for the Strata Ross Project in Crook County \citep{strataenergyinc.2010,strataenergyinc.2010a}. Wyoming is a agreement State with the \ac{NRC} which shifts the approval process of mine operations from the \ac{NRC} to the \ac{WDEQ} \citep{nrc2018}\footnote{Agreement states must apply restoration and operating standards at least as stringent as the \ac{NRC} and \ac{EPA} rules. The benefit for companies is reduced overhead costs. A comparison of filling costs finds that completing the reports necessary to begin a in situ operation costs \$3.2 million less when filled through the \ac{WDEQ} instead of with the \ac{NRC} \citep{castellon2023,nuclearregulatorycommission2023j}.}. The Strata Ross Project, began production while the \ac{NRC} sill managed the technical report approval process and required restoration cost estimates over time to be provided in the report. This final report is only used to estimate the average Restoration cost of Wyoming projects.


