Colorado · Nonprofit
THE NATIONAL MINING HALL OF FAME AND MUSEUM
THE NATIONAL MINING HALL OF FAME AND MUSEUM (Colorado) receives grants from 19 organizations whose IRS filings report $2,484,060 to it, the largest being Avenir Foundation Inc ($1,500,000). 10 of them have funded it in more than one year.
Against its field
THE NATIONAL MINING HALL OF FAME AND MUSEUM runs a healthier operating margin than three-quarters of the 5,123 arts & culture nonprofits its size.
this organization peer median middle 50% of peers· 5,123 arts & culture nonprofits $1M–$10M, FY2024
Three funders worth looking at
Grantmakers with no record of funding this organization, ranked by how strongly the co-funder graph and the mission embeddings agree. The evidence is in section 03.
- Caring for Colorado Foundationshared funders
- The NBK Foundationportfolio match
- Indiana Humanities Council Incportfolio match
The organization over time
Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
Government-grant reliance: 2020 10% · 2021 5% · 2024 5%. Grants only. Government contracts and fees sit inside program revenue.
91% of THE NATIONAL MINING HALL OF FAME AND MUSEUM’s revenue is contributions — more reliant on donations than three-quarters of its peers (64% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 3 of the last 8 reported years ran a deficit.
reserve
Who funds it, year by year
2017 → 2023: the base narrowed from 5 funders to 3 funders, grant income rose $27k → $265k.
8 of 19 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 18% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
Left out of every figure on this page: $184k from 2 payers (the payer shares this organization's board, largest The Denver Foundation). These are real filings, and they are not money THE NATIONAL MINING HALL OF FAME AND MUSEUM raised.
From the IRS filings of THE NATIONAL MINING HALL OF FAME AND MUSEUM’s funders (the co-funder graph). Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
THE NATIONAL MINING HALL OF FAME AND MUSEUM leans on a few funders — its largest provides 60% of grant income and the top three 85%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
Largest funder’s share by year: 2017 37% · 2018 77% · 2019 62% · 2020 32% · 2021 41% · 2022 30% · 2023 77% — growing more concentrated.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How long its funders stay
42% of THE NATIONAL MINING HALL OF FAME AND MUSEUM's funders are still giving 3 years after their first grant; 53% give in more than one year at all.
Share of funders still giving k years after their first recorded grant, pooled across every acquisition cohort. A funder counts as retained in a year only if it made a grant that year. Measured to FY2023, the last fiscal year that has finished arriving — a funder cannot be counted as lapsed in a year most filers have not reached.
Where its funders are
76% of THE NATIONAL MINING HALL OF FAME AND MUSEUM's grant income comes from Colorado funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $456k arriving through sponsors registered in 5 statesis excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Funders to approach
Grantmakers that don’t fund you yet, surfaced two ways: they back organizations that share your funders, or their grantees resemble your mission. The ones both signals agree on come first. Your 19 funders put you under-funded among the 400 organizations that share them.
- Caring for Colorado Foundationshared fundersCO · backs 28 organizations that share your funders
- The NBK Foundationportfolio matchits grantees resemble your mission
- Indiana Humanities Council Incportfolio matchits grantees resemble your mission
- The Candelaria Fundportfolio matchits grantees resemble your mission
- Montana History Foundationportfolio matchits grantees resemble your mission
- Humanities Kansas Incportfolio matchits grantees resemble your mission
- Indiana Historical Societyportfolio matchits grantees resemble your mission
- Nebraska Humanities Councilportfolio matchits grantees resemble your mission
- Jeffris Family Foundation Ltdportfolio matchits grantees resemble your mission
- Idaho Humanities Council Incportfolio matchits grantees resemble your mission
- National Trust for Historic Preservation in the United Statesportfolio matchits grantees resemble your mission
- Historic Landmarks Foundation of Indiana Incportfolio matchits grantees resemble your mission
From the co-funder graph (funders backing at least two comparable organizations, shrunk for grantee count, donor-advised and mega-funds excluded) and the universe embeddings. A research starting point; overlap is association, not a guarantee of fit.
Government funding THE NATIONAL MINING HALL OF FAME AND MUSEUM receives
Grants and contracts to this organization from federal (USASpending) and state checkbooks, reconciled to its EIN. $85k on record.
- Institute of Museum and Library Services$75k
- National Endowment for the Humanities$10k
Federal grants vs contracts are distinguished; state line items keep their reported category. Matched by name + geography (the BMF), so coverage is partial and precision-first.
Organizations like THE NATIONAL MINING HALL OF FAME AND MUSEUM
Nonprofits whose mission and program text most resemble this one, by semantic similarity over the universe of US filings — the closest peers, and often the clearest route to shared or prospective funders.
In Colorado
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
72% of spending goes to programs.
Governance
Public support
97%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Screen this organization
A dated, signed PDF of the compliance screen for THE NATIONAL MINING HALL OF FAME AND MUSEUM: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds THE NATIONAL MINING HALL OF FAME AND MUSEUM?
- THE NATIONAL MINING HALL OF FAME AND MUSEUM (Colorado) receives grants from 19 organizations whose IRS filings report $2,484,060 to it, the largest being Avenir Foundation Inc ($1,500,000). 10 of them have funded it in more than one year.
- How many funders does THE NATIONAL MINING HALL OF FAME AND MUSEUM have?
- IRS filings report 19 organizations giving $2,484,060 in grants to THE NATIONAL MINING HALL OF FAME AND MUSEUM, 10 of which have funded it in more than one year.
- Who is the largest funder of THE NATIONAL MINING HALL OF FAME AND MUSEUM?
- Avenir Foundation Inc is the largest funder on record, with $1,500,000 in grants. The full list of funders is on this page.
- How can an organization like THE NATIONAL MINING HALL OF FAME AND MUSEUM find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Colorado. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2024 (financials across 2017–2024), and the filings of 19funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported August 27, 2026. What this page cannot tell you · view filing