Liabilities / Assets
63rd percentile
Higher debt load relative to assets than 63% of similar nonprofits.
EIN 46-0392748 • 501(c)3 • Lead, SD
Profile
Homestake mining museum's purpose is to raise awareness of the minimg activities which took place in the world's largest gold mine.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
63rd percentile
Higher debt load relative to assets than 63% of similar nonprofits.
Liabilities / Revenue
64th percentile
Higher debt load relative to revenue than 64% of similar nonprofits.
Net Margin
66th percentile
Higher net margin than 66% of similar nonprofits.
Top Officer Pay
81st percentile
Higher top officer pay than 81% of similar nonprofits.
Top officer pay equals 0.0% of source-year revenue.
Asset Growth
70th percentile
Faster asset growth than 70% of similar nonprofits.
Revenue Growth
74th percentile
Faster revenue growth than 74% of similar nonprofits.
Assets
Up$198,992
Up $22,631 (+13%) from 2023
Liabilities
Down$444
Down $1,355 (-75%) from 2023
Net Assets
Up$198,548
Up $23,986 (+14%) from 2023
Revenue
Up$207,693
Up $40,580 (+24%) from 2023
Expenses
Up$183,707
Up $18,652 (+11%) from 2023
Net Income
Up$23,986
Up $21,928 (+1066%) from 2023
Most recent year
2024 • Form 990XML pending. An XML filing is linked for this year, but detailed extraction is still pending.
The latest 2024 filing currently has linked XML that has not been fully parsed yet. Showing the latest detailed filing from 2022 below.
Homestake mining museum's purpose is to raise awareness of the minimg activities which took place in the world's largest gold mine.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Cash and Non-Interest-Bearing Accounts | $105,772 | $135,533 | ▲ $29,761 |
| Land, Buildings, and Equipment, Net | $26,271 | $24,038 | ▼ $2,233 |
| Inventories for Sale or Use | $2,608 | $8,517 | ▲ $5,909 |
| Accounts Receivable | - | $179 | - |
| Total Assets | $136,026 | $172,777 | ▲ $36,751 |
| Other Assets Total | $1,375 | $4,510 | ▲ $3,135 |
| Liabilities | |||
| Accounts Payable and Accrued Expenses | $1,613 | - | - |
| Other Liabilities | - | $273 | - |
| Total Liabilities | $1,613 | $273 | ▼ $1,340 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $134,413 | $172,504 | ▲ $38,091 |
| Total Net Assets Fund Balance | $134,413 | $172,504 | ▲ $38,091 |
| Total Liabilities and Net Assets / Fund Balance | $136,026 | $172,777 | ▲ $36,751 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Other Land Buildings | $24,038 | $114,691 | $138,729 |
| Name | Title |
|---|---|
| Mike Stahl | President/se |
| David Vardiman | Board Member |
| David Wolff | Board Member |
| Donna Job | Board Member |
| Laird Klippenenstein | Board Member |
| Mark Rantapaa | Board Member |
| Steve Job | Board Member |
| Lyman Toews | SECRETARY+ |
| David Reddick | Treasurer |
| Jerry Pontius | Vice-preside |
| Line Item | Amount |
|---|---|
| Salaries, Compensation, and Employee Benefits | $84,160 |
| Other Expenses | $54,282 |
| Total Fundraising Expense | $523 |
| Grants and Similar Amounts Paid | $0 |
| Professional Fundraising Fees | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Other Salaries and Wages | $76,921 | - | - | $76,921 |
| Advertising | $14,684 | - | - | $14,684 |
| Occupancy | $9,228 | - | - | $9,228 |
| Insurance | $8,363 | - | - | $8,363 |
| Fees for Services Other | $7,792 | - | - | $7,792 |
| Depreciation Depletion | $7,468 | - | - | $7,468 |
| Payroll Taxes | $7,239 | - | - | $7,239 |
| Fees for Services Accounting | - | $1,693 | - | $1,693 |
| Office Expenses | - | $1,094 | - | $1,094 |
| All Other Expenses | - | - | $523 | $523 |
| Other Expenses | $481 | $1,859 | - | $481 |
| Total Functional Expenses | $133,273 | $4,646 | $523 | $138,442 |
| Line Item | Amount |
|---|---|
| Professional Fundraising Fees | $0 |
| Liability | Amount |
|---|---|
| Payroll Liabilities Payable | $251 |
| Sales Tax Payable | $22 |
“No review was or will be conducted.”
“No documents available to the public”
“Visitors toured the mining museum and purchased mining related items in the gift shop.”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
| Path | # | Value |
|---|---|---|
| IRS990/AccountantCompileOrReviewInd | 0 | false |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 1613 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 179 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | false |
| IRS990/ActivityOrMissionDesc | 0 | HOMESTAKE MINING MUSEUM'S PURPOSE IS TO RAISE AWARENESS OF THE MINIMG ACTIVITIES WHICH TOOK PLACE IN THE WORLD'S LARGEST GOLD MINE. |
| IRS990/AdvertisingGrp/ProgramServicesAmt | 0 | 14684 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 14684 |
| IRS990/AllOtherContributionsAmt | 0 | 85411 |
| IRS990/AllOtherExpensesGrp/FundraisingAmt | 0 | 523 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 523 |
| IRS990/BackupWthldComplianceInd | 0 | false |
| IRS990/BooksInCareOfDetail/PersonNm | 0 | TODD DUEX |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 6055841605 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 323 W MAIN |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | LEAD |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | SD |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 57754 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | false |
| IRS990/BusinessRlnWithFamMemInd | 0 | false |
| IRS990/BusinessRlnWithOrgMemInd | 0 | false |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 105772 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 135533 |
| IRS990/ChangeToOrgDocumentsInd | 0 | false |
| IRS990/CollectionsOfArtInd | 0 | false |
| IRS990/CompensationFromOtherSrcsInd | 0 | false |
| IRS990/CompensationProcessCEOInd | 0 | false |
| IRS990/CompensationProcessOtherInd | 0 | false |
| IRS990/ConflictOfInterestPolicyInd | 0 | false |
| IRS990/ConservationEasementsInd | 0 | false |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | false |
| IRS990/CostOfGoodsSoldAmt | 0 | 14569 |
| IRS990/CreditCounselingInd | 0 | false |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 99261 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 0 |
| IRS990/CYOtherExpensesAmt | 0 | 54282 |
| IRS990/CYOtherRevenueAmt | 0 | 21696 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 55576 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 38091 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 84160 |
| IRS990/CYTotalExpensesAmt | 0 | 138442 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 523 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 176533 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | false |
| IRS990/DeductibleArtContributionInd | 0 | false |
| IRS990/DeductibleNonCashContriInd | 0 | false |
| IRS990/DelegationOfMgmtDutiesInd | 0 | false |
| IRS990/DepreciationDepletionGrp/ProgramServicesAmt | 0 | 7468 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 7468 |
| IRS990/Desc | 0 | VISITORS TOURED THE MINING MUSEUM AND PURCHASED MINING RELATED ITEMS IN THE GIFT SHOP. |
| IRS990/DescribedInSection501c3Ind | 0 | true |
| IRS990/DisregardedEntityInd | 0 | false |
| IRS990/DocumentRetentionPolicyInd | 0 | false |
| IRS990/DonorAdvisedFundInd | 0 | false |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | false |
| IRS990/ElectionOfBoardMembersInd | 0 | false |
| IRS990/EmployeeCnt | 0 | 10 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | false |
| IRS990/EngagedInExcessBenefitTransInd | 0 | false |
| IRS990/ExpenseAmt | 0 | 123248 |
| IRS990/FamilyOrBusinessRlnInd | 0 | false |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 1693 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 1693 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 7792 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 7792 |
| IRS990/ForeignActivitiesInd | 0 | false |
| IRS990/ForeignFinancialAccountInd | 0 | false |
| IRS990/ForeignOfficeInd | 0 | false |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 6 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 7 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 8 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 9 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | DONNA JOB |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | STEVE JOB |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | LAIRD KLIPPENENSTEIN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | JERRY PONTIUS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | MARK RANTAPAA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | DAVID REDDICK |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | MIKE STAHL |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | LYMAN TOEWS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | DAVID VARDIMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | DAVID WOLFF |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | VICE-PRESIDE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | PRESIDENT/SE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | SECRETARY+ |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | BOARD MEMBER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | BOARD MEMBER |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | false |
| IRS990/FormerOfcrEmployeesListedInd | 0 | false |
| IRS990/FSAuditedInd | 0 | false |
| IRS990/FundraisingActivitiesInd | 0 | false |
| IRS990/GamingActivitiesInd | 0 | false |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 10 |
| IRS990/GovernmentGrantsAmt | 0 | 5000 |
| IRS990/GrantsToIndividualsInd | 0 | false |
| IRS990/GrantsToOrganizationsInd | 0 | false |
| IRS990/GrantToRelatedPersonInd | 0 | false |
| IRS990/GrossReceiptsAmt | 0 | 191102 |
| IRS990/GrossSalesOfInventoryAmt | 0 | 36265 |
| IRS990/GroupReturnForAffiliatesInd | 0 | false |
| IRS990/IncludeFIN48FootnoteInd | 0 | false |
| IRS990/IndependentAuditFinclStmtInd | 0 | false |
| IRS990/IndependentVotingMemberCnt | 0 | 10 |
| IRS990/IndoorTanningServicesInd | 0 | false |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InsuranceGrp/ProgramServicesAmt | 0 | 8363 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 8363 |
| IRS990/InventoriesForSaleOrUseGrp/BOYAmt | 0 | 2608 |
| IRS990/InventoriesForSaleOrUseGrp/EOYAmt | 0 | 8517 |
| IRS990/InvestmentInJointVentureInd | 0 | false |
| IRS990/IRPDocumentCnt | 0 | 0 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 114691 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 26271 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 24038 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 138729 |
| IRS990/LoanOutstandingInd | 0 | false |
| IRS990/LobbyingActivitiesInd | 0 | false |
| IRS990/LocalChaptersInd | 0 | false |
| IRS990/MaterialDiversionOrMisuseInd | 0 | false |
| IRS990/MembershipDuesAmt | 0 | 8850 |
| IRS990/MembersOrStockholdersInd | 0 | false |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | true |
| IRS990/MinutesOfGoverningBodyInd | 0 | true |
| IRS990/MissionDesc | 0 | HOMESTAKE MINING MUSEUM'S PURPOSE IS TO RAISE AWARENESS OF THE MINIMG ACTIVITIES WHICH TOOK PLACE IN THE WORLD'S LARGEST GOLD MINE. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | false |
| IRS990/MoreThan5000KToOrgInd | 0 | false |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 134413 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 172504 |
| IRS990/NetIncomeOrLossGrp/RelatedOrExemptFuncIncomeAmt | 0 | 21696 |
| IRS990/NetIncomeOrLossGrp/TotalRevenueColumnAmt | 0 | 21696 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 134413 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 172504 |
| IRS990/NoListedPersonsCompensatedInd | 0 | X |
| IRS990/NondeductibleContributionsInd | 0 | false |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 9228 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 9228 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 1094 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 1094 |
| IRS990/OfficerMailingAddressInd | 0 | false |
| IRS990/OperateHospitalInd | 0 | false |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 1375 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 4510 |
| IRS990/OtherExpensesGrp/Desc | 0 | BANK CHARGES |
| IRS990/OtherExpensesGrp/Desc | 1 | SUPPLIES |
| IRS990/OtherExpensesGrp/Desc | 2 | UNIFORMS |
| IRS990/OtherExpensesGrp/Desc | 3 | MEMBERSHIPS |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 1859 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 564 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 533 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 2 | 481 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 1859 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 564 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 533 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 481 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 273 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 76921 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 76921 |
| IRS990/PartialLiquidationInd | 0 | false |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 7239 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 7239 |
| IRS990/PoliticalCampaignActyInd | 0 | false |
| IRS990/PrincipalOfficerNm | 0 | MIKE STAHL |
| IRS990/ProfessionalFundraisingInd | 0 | false |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | TOURS |
| IRS990/ProgramServiceRevenueGrp/Desc | 1 | ADMISSIONS |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 42886 |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 1 | 12690 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 42886 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 1 | 12690 |
| IRS990/ProgSrvcAccomActyOtherGrp/Desc | 0 | VISITORS TOURED THE MINING MUSEUM AND PURCHASED MINING RELATED ITEMS IN THE GIFT SHOP. |
| IRS990/ProgSrvcAccomActyOtherGrp/ExpenseAmt | 0 | 10025 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | false |
| IRS990/PYContributionsGrantsAmt | 0 | 32484 |
| IRS990/PYExcessBenefitTransInd | 0 | false |
| IRS990/PYInvestmentIncomeAmt | 0 | 22 |
| IRS990/PYOtherExpensesAmt | 0 | 43107 |
| IRS990/PYOtherRevenueAmt | 0 | 21178 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 52957 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 9535 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 53999 |
| IRS990/PYTotalExpensesAmt | 0 | 97106 |
| IRS990/PYTotalRevenueAmt | 0 | 106641 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | 38091 |
| IRS990/RelatedEntityInd | 0 | false |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | false |
| IRS990/ReportInvestmentsOtherSecInd | 0 | false |
| IRS990/ReportLandBuildingEquipmentInd | 0 | true |
| IRS990/ReportOtherAssetsInd | 0 | false |
| IRS990/ReportOtherLiabilitiesInd | 0 | true |
| IRS990/ReportProgramRelatedInvstInd | 0 | false |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearAmt | 0 | 99261 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus1YearAmt | 0 | 32484 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 97913 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 57081 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 48002 |
| IRS990ScheduleA/GiftsGrantsContrisRcvd509Grp/TotalAmt | 0 | 334741 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearAmt | 0 | 91841 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus1YearAmt | 0 | 91406 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus2YearsAmt | 0 | 38028 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus3YearsAmt | 0 | 78969 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/CurrentTaxYearMinus4YearsAmt | 0 | 59292 |
| IRS990ScheduleA/GrossReceiptsAdmissionsGrp/TotalAmt | 0 | 359536 |
| IRS990ScheduleA/InvestmentIncomeCYPct | 0 | 0.00000 |
| IRS990ScheduleA/InvestmentIncomePYPct | 0 | 0.00000 |
| IRS990ScheduleA/PubliclySupportedOrg509a2Ind | 0 | X |
| IRS990ScheduleA/PublicSupportCY509Pct | 0 | 1.00000 |
| IRS990ScheduleA/PublicSupportPY509Pct | 0 | 1.00000 |
| IRS990ScheduleA/PublicSupportTotal509Amt | 0 | 694277 |
| IRS990ScheduleA/ThirtyThrPctSuprtTestsCY509Ind | 0 | X |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearAmt | 0 | 191102 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus1YearAmt | 0 | 123890 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus2YearsAmt | 0 | 135941 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus3YearsAmt | 0 | 136050 |
| IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus4YearsAmt | 0 | 107294 |
| IRS990ScheduleA/Total509Grp/TotalAmt | 0 | 694277 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearAmt | 0 | 191102 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus1YearAmt | 0 | 123890 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus2YearsAmt | 0 | 135941 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus3YearsAmt | 0 | 136050 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus4YearsAmt | 0 | 107294 |
| IRS990ScheduleA/TotalSupportCalendarYearGrp/TotalAmt | 0 | 694277 |
| IRS990/ScheduleBRequiredInd | 0 | false |
| IRS990ScheduleD/OtherLandBuildingsGrp/BookValueAmt | 0 | 24038 |
| IRS990ScheduleD/OtherLandBuildingsGrp/DepreciationAmt | 0 | 114691 |
| IRS990ScheduleD/OtherLandBuildingsGrp/OtherCostOrOtherBasisAmt | 0 | 138729 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 0 | 251 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Amt | 1 | 22 |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 0 | PAYROLL LIABILITIES PAYABLE |
| IRS990ScheduleD/OtherLiabilitiesOrgGrp/Desc | 1 | SALES TAX PAYABLE |
| IRS990ScheduleD/TotalBookValueLandBuildingsAmt | 0 | 24038 |
| IRS990ScheduleD/TotalLiabilityAmt | 0 | 273 |
| IRS990/ScheduleJRequiredInd | 0 | false |
| IRS990/ScheduleORequiredInd | 0 | false |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | VISITORS TOURED THE MINING MUSEUM AND PURCHASED MINING RELATED ITEMS IN THE GIFT SHOP. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | NO REVIEW WAS OR WILL BE CONDUCTED. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | NO DOCUMENTS AVAILABLE TO THE PUBLIC |
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| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | FORM 990, PAGE 6, PART VI, LINE 11B |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | FORM 990, PAGE 6, PART VI, LINE 19 |
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| ReturnHeader/PreparerFirmGrp/PreparerFirmEIN | 0 | 460450514 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt | 0 | GARRET TENBROEK CPA PC |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt | 0 | 418 3RD AVENUE WEST |
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| ReturnHeader/TaxPeriodEndDt | 0 | 2022-12-31 |
| ReturnHeader/TaxYr | 0 | 2022 |
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