Civic Intelligence

Sterling Hill Mining Museum Inc

EIN 22-3125202 • 501(c)3 • Ogdensburg, NJ

Profile

The sterling hill mining museum is dedicated to the preservation, interpretation, understanding, and appreciation of the history of mining, mining technology, mineralogy, and geology unique to the state of new jersey through scientific research and educational programs.

30 Plant StreetOgdensburg, NJ 07439

www.sterlinghill.org

Siviq Scores

Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.

Liabilities / Assets

10th percentile

0.00x

Higher debt load relative to assets than 10% of similar nonprofits.

501(c)3 • $5M-$10M nonprofits • Source year 2025

Liabilities / Revenue

13th percentile

0.00x

Higher debt load relative to revenue than 13% of similar nonprofits.

501(c)3 • $5M-$10M nonprofits • Source year 2025

Net Margin

89th percentile

50%

Higher net margin than 89% of similar nonprofits.

501(c)3 • $5M-$10M nonprofits • Source year 2025

Top Officer Pay

29th percentile

$0

Higher top officer pay than 29% of similar nonprofits.

Top officer pay equals 0.0% of source-year revenue.

501(c)3 • $5M-$10M nonprofits • Source year 2025

Asset Growth

52nd percentile

5.4%

Faster asset growth than 52% of similar nonprofits.

501(c)3 • $5M-$10M nonprofits • Annualized from 2023 to 2025

Revenue Growth

44th percentile

4.3%

Faster revenue growth than 44% of similar nonprofits.

501(c)3 • $5M-$10M nonprofits • Annualized from 2023 to 2025

Balance Sheet
Liabilities / Assets10th percentile

Assets

Up

$8,340,559

Up $825,895 (+11%) from 2023

Liabilities

Flat

$3,360

Flat from 2023

Net Assets

Up

$8,337,199

Up $825,895 (+11%) from 2023

Operations
Liabilities / Revenue13th percentileNet Margin89th percentile

Revenue

Up

$1,006,892

Up $80,762 (+8.7%) from 2023

Expenses

Down

$504,180

Down $49,947 (-9.0%) from 2023

Net Income

Up

$502,712

Up $130,709 (+35%) from 2023

Trend Graphs

Balance Sheet Trend

Asset Growth52nd percentile

Grouped bars show assets, liabilities, and net assets across loaded filings.

$10M$5.0M$0Assets 2011: $4,856,524Liabilities 2011: $785,984Net Assets 2011: $4,070,5402011Assets 2012: $4,628,927Liabilities 2012: $108,362Net Assets 2012: $4,520,5652012Assets 2013: $5,015,715Liabilities 2013: $226,173Net Assets 2013: $4,789,5422013Assets 2014: $5,346,526Liabilities 2014: $38,549Net Assets 2014: $5,307,9772014Assets 2015: $5,739,882Liabilities 2015: $36,114Net Assets 2015: $5,703,7682015Assets 2016: $6,183,340Liabilities 2016: $10,254Net Assets 2016: $6,173,0862016Assets 2017: $6,748,956Liabilities 2017: $13,250Net Assets 2017: $6,735,7062017Assets 2018: $6,937,657Liabilities 2018: $18,669Net Assets 2018: $6,918,9882018Assets 2019: $7,298,425Liabilities 2019: $11,415Net Assets 2019: $7,287,0102019Assets 2020: $7,623,617Liabilities 2020: $4,218Net Assets 2020: $7,619,3992020Assets 2021: $7,396,282Liabilities 2021: $4,220Net Assets 2021: $7,392,0622021Assets 2022: $7,322,067Liabilities 2022: $3,360Net Assets 2022: $7,318,7072022Assets 2023: $7,514,664Liabilities 2023: $3,360Net Assets 2023: $7,511,3042023Assets 2025: $8,340,559Liabilities 2025: $3,360Net Assets 2025: $8,337,1992025

Highlighted filing

2025

Assets$8,340,559
Liabilities$3,360
Net Assets$8,337,199
Open 2025 Filing

Operations Trend

Revenue Growth44th percentile

Revenue, expenses, and net income by year, with the latest filing highlighted.

$1.5M$1.0M$500K$0-$500KRevenue 2011: $806,833Expenses 2011: $609,528Net Income 2011: $197,3052011Revenue 2012: $1,031,302Expenses 2012: $581,277Net Income 2012: $450,0252012Expenses 2013: $687,2782013Revenue 2014: $1,206,699Expenses 2014: $688,264Net Income 2014: $518,4352014Revenue 2015: $1,102,074Expenses 2015: $706,283Net Income 2015: $395,7912015Revenue 2016: $1,108,359Expenses 2016: $639,041Net Income 2016: $469,3182016Revenue 2017: $1,147,866Expenses 2017: $585,246Net Income 2017: $562,6202017Revenue 2018: $802,706Expenses 2018: $619,424Net Income 2018: $183,2822018Revenue 2019: $1,007,979Expenses 2019: $639,957Net Income 2019: $368,0222019Revenue 2020: $955,504Expenses 2020: $623,115Net Income 2020: $332,3892020Revenue 2021: $217,785Expenses 2021: $430,216Net Income 2021: -$212,4312021Revenue 2022: $422,071Expenses 2022: $435,985Net Income 2022: -$13,9142022Revenue 2023: $926,130Expenses 2023: $554,127Net Income 2023: $372,0032023Revenue 2025: $1,006,892Expenses 2025: $504,180Net Income 2025: $502,7122025

Highlighted filing

2025

Revenue$1,006,892
Expenses$504,180
Net Income$502,712
Open 2025 Filing

Filings

Most recent year

2025 • Form 990Detailed filing. Detailed filing data is available for this year.

Open filing
Assets
$8,340,559
Liabilities
$3,360
Net assets
$8,337,199
Revenue
$1,006,892
Expenses
$504,180
Net income
$502,712
Balance SheetOperations
YearAssetsLiabilitiesNet AssetsRevenueExpensesNet Income
2025Detailed filing. Detailed filing data is available for this year.$8.34$0.00$8.34$1.01$0.50$0.50
2023Detailed filing. Detailed filing data is available for this year.$7.51$0.00$7.51$0.93$0.55$0.37
2022Detailed filing. Detailed filing data is available for this year.$7.32$0.00$7.32$0.42$0.44$0.01
2021Detailed filing. Detailed filing data is available for this year.$7.40$0.00$7.39$0.22$0.43$0.21
2020Detailed filing. Detailed filing data is available for this year.$7.62$0.00$7.62$0.96$0.62$0.33
2019Detailed filing. Detailed filing data is available for this year.$7.30$0.01$7.29$1.01$0.64$0.37
2018Detailed filing. Detailed filing data is available for this year.$6.94$0.02$6.92$0.80$0.62$0.18
2017Detailed filing. Detailed filing data is available for this year.$6.75$0.01$6.74$1.15$0.59$0.56
2016Detailed filing. Detailed filing data is available for this year.$6.18$0.01$6.17$1.11$0.64$0.47
2015Detailed filing. Detailed filing data is available for this year.$5.74$0.04$5.70$1.10$0.71$0.40
2014Detailed filing. Detailed filing data is available for this year.$5.35$0.04$5.31$1.21$0.69$0.52
2013Facts available. Structured filing facts are available, but richer extracted sections are limited.$5.02$0.23$4.79$0.69
2012Summary only. Only limited summary data is available for this year.$4.63$0.11$4.52$1.03$0.58$0.45
2011Summary only. Only limited summary data is available for this year.$4.86$0.79$4.07$0.81$0.61$0.20
Latest Filing Detail
Jump To
Filing Snapshot
Filing Period
Mar 1, 2024 to Feb 28, 2025
Signed
Jan 15, 2026
Return Version
2024v5.0
Gross Receipts
$1,057,305
Mission and Program Overview

Mission

The sterling hill mining museum is dedicated to the preservation, interpretation, understanding, and appreciation of the history of mining, mining technology, mineralogy, and geology unique to the state of new jersey through scientific research and educational programs.

Balance Sheet Detail
LineBeginningEndChange
Assets
Savings and Temporary Cash Investments$1,828,027$2,684,037▲ $856,010
Land, Buildings, and Equipment, Net$1,558,287$1,675,767▲ $117,480
Cash and Non-Interest-Bearing Accounts$2,010,810$1,541,032▼ $469,778
Other Notes and Loans Receivable, Net$23,500$19,250▼ $4,250
Total Assets$7,837,847$8,340,559▲ $502,712
Other Assets Total$2,417,223$2,420,473▲ $3,250
Liabilities
Other Liabilities$3,360$3,360→ $0
Total Liabilities$3,360$3,360→ $0
Net Assets / Fund Balance
Net Assets Without Donor Restrictions$5,746,590$6,249,302▲ $502,712
Net Assets With Donor Restrictions$2,087,897$2,087,897→ $0
Total Net Assets Fund Balance$7,834,487$8,337,199▲ $502,712
Total Liabilities and Net Assets / Fund Balance$7,837,847$8,340,559▲ $502,712

Asset Categories

AssetBook ValueDepreciationBasis
Buildings$40,444$1,415,256$1,455,700
Other Land Buildings$453,162$976,980$1,430,142
Land$1,182,161-$1,182,161
Other Assets Org$2,420,473--
Compensation and Service Providers
Top Officer Pay29th percentile

Board Members and Trustees

NameTitle
William KrothPresident
Bob HornTrustee
Doug FrancisoTrustee
George HutnickTrustee
Gordon PowersTrustee
Jeff WinklerTrustee
Margaret HolzerTrustee
Michael PierceTrustee
Walter SpinkTrustee
Haig KasabachSecretary
Denise KrothTreasurer
Jeff OsowskiVice Preside
Revenue and Support

Revenue Composition

Contributions and Grants
$26,391
Program Service Revenue
$524,729
Investment Income
$2,791
Other Revenue
$452,981
All Other Contributions
$24,256
Change in Net Assets
$502,712

Audited Revenue Reconciliation

Revenue per Audited Statements
$1,006,892
Total Revenue per Audited Statements
$1,006,892
Total Revenue per Form 990
$1,006,892
Expenses and Functional Allocation

Major Expense Lines

Line ItemAmount
Other Expenses$260,277
Salaries, Compensation, and Employee Benefits$227,403
Grants and Similar Amounts Paid$16,500
Professional Fundraising Fees$0
Total Fundraising Expense$0

Functional Expense Allocation

Line ItemProgramManagementFundraisingTotal
Other Salaries and Wages$163,006$12,269-$175,275
Payroll Taxes$48,479$3,649-$52,128
Insurance$37,366$6,594-$43,960
Other Expenses$31,793$5,611-$37,404
All Other Expenses$9,290$22,070-$31,360
Grants to Domestic Individuals$16,500--$16,500
Total Functional Expenses$395,321$108,859$0$504,180

Audited Expense Reconciliation

Line ItemAmount
Expenses per Audited Statements$504,180
Total Expenses per Audited Statements$504,180
Total Expenses per Form 990$504,180
Fundraising, Events, and Gaming
Fundraising activities
No
Gaming activities
No
Professional fundraiser used
No

Fundraising and Gaming Totals

Line ItemAmount
Professional Fundraising Fees$0
Political and Lobbying Activity
Political campaign activity
No
Lobbying activity
No
Subject to proxy tax
No
Debt and Bond Financing

Other Reported Liabilities

LiabilityAmount
Due to Related Party$3,360
Governance and Compliance

Governance Checklist

Compiled or reviewed by an accountant
No
Annual disclosure for covered persons
No
Backup withholding compliance
No
Business relationship with 35% controlled entity
No
Business relationship with family members
No
Business relationship with organization members
No
Material changes to governing documents
No
Compensation from other sources disclosed
No
CEO compensation reviewed
No
Other officer compensation reviewed
No
Conflict-of-interest policy
Yes
Audited financial statements prepared
No
Key decisions subject to board approval
No
Management duties delegated
No

Governance Explanations

Form 990, Page 6, Part VI, Line 2

“William kroth denise kroth president treasurer married”

Form 990, Page 6, Part VI, Line 11B

“A copy of the 990 is provided to the board”

Form 990, Page 6, Part VI, Line 19

“No other documents available to the public”

Filing and Contact Details

Filer

Filer Name
Sterling Hill Mining Museum Inc
EIN
22-3125202
Phone
9732097212
Address
30 PLANT STREET, OGDENSBURG, NJ 07439

Signing Officer

Name
William Kroth
Title
President
Phone
9732097212
Signed
2026-01-15
Discuss with paid preparer
Yes

Organization Details

Principal Officer
William Kroth
Formed
1989
Legal Domicile
Nj
Voting Board Members
12
Independent Board Members
12
Employees
10

Preparer

Firm
The Johnson Group CPA LLC
Address
99 GRAYROCK ROAD SUITE 202, CLINTON, NJ 08809
Preparer
Stephen Johnson
Phone
9088000999
Supplemental Narrative

Additional Explanations

FORM 990 - ORGANIZATION'S MISSION

“The sterling hill mining museum is dedicated to the preservation, interpretation, understanding, and appreciation of the history of mining, mining technology, mineralogy, and geology unique to the state of new jersey through scientific research and educational programs.”

Form 990, Part XI, Line 9

“Cost of sales - gift shop 0 cost of sales - gift shop 0”

Financial Statement Notes

Schedule D, Page 4, Part XI, Line 2D

“Cost of sales - gift shop 0”

Schedule D, Page 4, Part XII, Line 2D

“Cost of sales - gift shop 0”

Raw XML AppendixShowing 400 of 411 raw XML fields

This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.

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IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt0THE STERLING HILL MINING MUSEUM IS DEDICATED TO THE PRESERVATION, INTERPRETATION, UNDERSTANDING, AND APPRECIATION OF THE HISTORY OF MINING, MINING TECHNOLOGY, MINERALOGY, AND GEOLOGY UNIQUE TO THE STATE OF NEW JERSEY THROUGH SCIENTIFIC RESEARCH AND EDUCATIONAL PROGRAMS.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt1WILLIAM KROTH DENISE KROTH PRESIDENT TREASURER MARRIED
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt2A COPY OF THE 990 IS PROVIDED TO THE BOARD
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt3NO OTHER DOCUMENTS AVAILABLE TO THE PUBLIC
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt4COST OF SALES - GIFT SHOP 0 COST OF SALES - GIFT SHOP 0
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc0FORM 990 - ORGANIZATION'S MISSION
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ReturnHeader/BuildTS02025-03-06 01:10:19Z
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ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt0THE JOHNSON GROUP CPA LLC
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt099 GRAYROCK ROAD SUITE 202
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm0CLINTON

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