Civic Intelligence

Northshore Mining Company

Plan context: Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan

EIN 84-1116857 • Cleveland, OH • 54 filings • 4 plans

200 Public Square, Suite 3300Cleveland, OH 44114-2315
Current Snapshot

Latest Year

2024

2024 Participants

546

2024 Assets

$145,510,065

2024 Contributions

$7,406,025

Historical Graphs

Total Assets Over Time

Aggregate end-of-year assets by filing year, excluding zero-asset years

$158,454,068$79,227,034$0199920122024YearValue
$145,510,065Latest year 2024

Participants Over Time

Largest reported end-of-year plan headcount by filing year, used to avoid double-counting participants across overlapping plans

6723360199920122024YearValue
546Latest year 2024

Company Timeline

Year summaries and individual filings are combined here so you can stay in one place while moving across years and plan filings.

Year / FilingFilingsParticipantsAssetsContributionsContrib./Participant
20242546$145,510,065$7,406,025$13,564iApproximate average salary by contribution assumption: employee only about $339,104 at 4% or $226,069 at 6%; with 50% employer match about $226,069 at 4% or $150,713 at 6%; with 100% employer match about $169,552 at 4% or $113,035 at 6%.
Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan-546$145,510,065$7,406,025$13,564iApproximate average salary by contribution assumption: employee only about $339,104 at 4% or $226,069 at 6%; with 50% employer match about $226,069 at 4% or $150,713 at 6%; with 100% employer match about $169,552 at 4% or $113,035 at 6%.
The Northshore Mining Company and Silver Bay Power Company Welfare Benefit Plan-400---
20232577$140,052,193$5,495,612$9,524iApproximate average salary by contribution assumption: employee only about $238,111 at 4% or $158,741 at 6%; with 50% employer match about $158,741 at 4% or $105,827 at 6%; with 100% employer match about $119,056 at 4% or $79,370 at 6%.
Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan-577$140,052,193$5,495,612$9,524iApproximate average salary by contribution assumption: employee only about $238,111 at 4% or $158,741 at 6%; with 50% employer match about $158,741 at 4% or $105,827 at 6%; with 100% employer match about $119,056 at 4% or $79,370 at 6%.
The Northshore Mining Company and Silver Bay Power Company Welfare Benefit Plan-412---
20222574$122,476,084$4,471,925$7,791iApproximate average salary by contribution assumption: employee only about $194,770 at 4% or $129,847 at 6%; with 50% employer match about $129,847 at 4% or $86,565 at 6%; with 100% employer match about $97,385 at 4% or $64,923 at 6%.
Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan-574$122,476,084$4,471,925$7,791iApproximate average salary by contribution assumption: employee only about $194,770 at 4% or $129,847 at 6%; with 50% employer match about $129,847 at 4% or $86,565 at 6%; with 100% employer match about $97,385 at 4% or $64,923 at 6%.
The Northshore Mining Company and Silver Bay Power Company Welfare Benefit Plan-353---
20212612$158,454,068$6,912,291$11,295iApproximate average salary by contribution assumption: employee only about $282,365 at 4% or $188,243 at 6%; with 50% employer match about $188,243 at 4% or $125,495 at 6%; with 100% employer match about $141,182 at 4% or $94,122 at 6%.
Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan-612$158,454,068$6,912,291$11,295iApproximate average salary by contribution assumption: employee only about $282,365 at 4% or $188,243 at 6%; with 50% employer match about $188,243 at 4% or $125,495 at 6%; with 100% employer match about $141,182 at 4% or $94,122 at 6%.
The Northshore Mining Company and Silver Bay Power Company Welfare Benefit Plan-438---
20202603$143,239,970$5,082,615$8,429iApproximate average salary by contribution assumption: employee only about $210,722 at 4% or $140,481 at 6%; with 50% employer match about $140,481 at 4% or $93,654 at 6%; with 100% employer match about $105,361 at 4% or $70,241 at 6%.
Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan-603$143,239,970$5,082,615$8,429iApproximate average salary by contribution assumption: employee only about $210,722 at 4% or $140,481 at 6%; with 50% employer match about $140,481 at 4% or $93,654 at 6%; with 100% employer match about $105,361 at 4% or $70,241 at 6%.
The Northshore Mining Company and Silver Bay Power Company Welfare Benefit Plan-472---
20192595$120,954,375$6,586,515$11,070iApproximate average salary by contribution assumption: employee only about $276,744 at 4% or $184,496 at 6%; with 50% employer match about $184,496 at 4% or $122,997 at 6%; with 100% employer match about $138,372 at 4% or $92,248 at 6%.
Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan-595$120,954,375$6,586,515$11,070iApproximate average salary by contribution assumption: employee only about $276,744 at 4% or $184,496 at 6%; with 50% employer match about $184,496 at 4% or $122,997 at 6%; with 100% employer match about $138,372 at 4% or $92,248 at 6%.
The Northshore Mining Company and Silver Bay Power Company Welfare Benefit Plan-465---
20182607$103,983,408$5,918,771$9,751iApproximate average salary by contribution assumption: employee only about $243,771 at 4% or $162,514 at 6%; with 50% employer match about $162,514 at 4% or $108,343 at 6%; with 100% employer match about $121,886 at 4% or $81,257 at 6%.
Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan-607$103,983,408$5,918,771$9,751iApproximate average salary by contribution assumption: employee only about $243,771 at 4% or $162,514 at 6%; with 50% employer match about $162,514 at 4% or $108,343 at 6%; with 100% employer match about $121,886 at 4% or $81,257 at 6%.
The Northshore Mining Company and Silver Bay Power Company Welfare Benefit Plan-454---
20172610$114,160,036$5,398,179$8,849iApproximate average salary by contribution assumption: employee only about $221,237 at 4% or $147,491 at 6%; with 50% employer match about $147,491 at 4% or $98,327 at 6%; with 100% employer match about $110,618 at 4% or $73,746 at 6%.
Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan-610$114,160,036$5,398,179$8,849iApproximate average salary by contribution assumption: employee only about $221,237 at 4% or $147,491 at 6%; with 50% employer match about $147,491 at 4% or $98,327 at 6%; with 100% employer match about $110,618 at 4% or $73,746 at 6%.
The Northshore Mining Company and Silver Bay Power Company Welfare Benefit Plan-455---
20162564$100,844,961$4,197,257$7,442iApproximate average salary by contribution assumption: employee only about $186,049 at 4% or $124,032 at 6%; with 50% employer match about $124,032 at 4% or $82,688 at 6%; with 100% employer match about $93,024 at 4% or $62,016 at 6%.
Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan-564$100,844,961$4,197,257$7,442iApproximate average salary by contribution assumption: employee only about $186,049 at 4% or $124,032 at 6%; with 50% employer match about $124,032 at 4% or $82,688 at 6%; with 100% employer match about $93,024 at 4% or $62,016 at 6%.
The Northshore Mining Company and Silver Bay Power Company Welfare Benefit Plan-443---
20152545$85,843,196$5,411,134$9,929iApproximate average salary by contribution assumption: employee only about $248,217 at 4% or $165,478 at 6%; with 50% employer match about $165,478 at 4% or $110,319 at 6%; with 100% employer match about $124,109 at 4% or $82,739 at 6%.
Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan-545$85,843,196$5,411,134$9,929iApproximate average salary by contribution assumption: employee only about $248,217 at 4% or $165,478 at 6%; with 50% employer match about $165,478 at 4% or $110,319 at 6%; with 100% employer match about $124,109 at 4% or $82,739 at 6%.
The Northshore Mining Company and Silver Bay Power Company Welfare Benefit Plan-471---
20142581$99,354,938$5,798,639$9,980iApproximate average salary by contribution assumption: employee only about $249,511 at 4% or $166,341 at 6%; with 50% employer match about $166,341 at 4% or $110,894 at 6%; with 100% employer match about $124,756 at 4% or $83,170 at 6%.
Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan-581$99,354,938$5,798,639$9,980iApproximate average salary by contribution assumption: employee only about $249,511 at 4% or $166,341 at 6%; with 50% employer match about $166,341 at 4% or $110,894 at 6%; with 100% employer match about $124,756 at 4% or $83,170 at 6%.
The Northshore Mining Company and Silver Bay Power Company Welfare Benefit Plan-461---
20132623$115,852,820$5,735,291$9,206iApproximate average salary by contribution assumption: employee only about $230,148 at 4% or $153,432 at 6%; with 50% employer match about $153,432 at 4% or $102,288 at 6%; with 100% employer match about $115,074 at 4% or $76,716 at 6%.
Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan-623$115,852,820$5,735,291$9,206iApproximate average salary by contribution assumption: employee only about $230,148 at 4% or $153,432 at 6%; with 50% employer match about $153,432 at 4% or $102,288 at 6%; with 100% employer match about $115,074 at 4% or $76,716 at 6%.
The Northshore Mining Company and Silver Bay Power Company Welfare Benefit Plan-505---
20122672$107,074,646$6,147,309$9,148iApproximate average salary by contribution assumption: employee only about $228,695 at 4% or $152,463 at 6%; with 50% employer match about $152,463 at 4% or $101,642 at 6%; with 100% employer match about $114,347 at 4% or $76,232 at 6%.
Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan-672$107,074,646$6,147,309$9,148iApproximate average salary by contribution assumption: employee only about $228,695 at 4% or $152,463 at 6%; with 50% employer match about $152,463 at 4% or $101,642 at 6%; with 100% employer match about $114,347 at 4% or $76,232 at 6%.
The Northshore Mining Company and Silver Bay Power Company Welfare Benefit Plan-549---
20113665$111,344,625$10,099,478$15,187iApproximate average salary by contribution assumption: employee only about $379,680 at 4% or $253,120 at 6%; with 50% employer match about $253,120 at 4% or $168,746 at 6%; with 100% employer match about $189,840 at 4% or $126,560 at 6%.
Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan-665$111,344,625$10,099,478$15,187iApproximate average salary by contribution assumption: employee only about $379,680 at 4% or $253,120 at 6%; with 50% employer match about $253,120 at 4% or $168,746 at 6%; with 100% employer match about $189,840 at 4% or $126,560 at 6%.
NORTHSHORE MINING COMPANY AND SILVER BAY POWER COMPANY WELFARE PLAN FOR PRE- 7-1-09 EXEMPT AND NON-EXEMPT RETIREES-0---
The Northshore Mining Company and Silver Bay Power Company Welfare Benefit Plan-665---
20102638$112,639,997$8,700,724$13,637iApproximate average salary by contribution assumption: employee only about $340,937 at 4% or $227,292 at 6%; with 50% employer match about $227,292 at 4% or $151,528 at 6%; with 100% employer match about $170,469 at 4% or $113,646 at 6%.
Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan-638$112,639,997$8,700,724$13,637iApproximate average salary by contribution assumption: employee only about $340,937 at 4% or $227,292 at 6%; with 50% employer match about $227,292 at 4% or $151,528 at 6%; with 100% employer match about $170,469 at 4% or $113,646 at 6%.
The Northshore Mining Company and Silver Bay Power Company Welfare Benefit Plan-637---
20092536$84,340,403$3,848,109$7,179iApproximate average salary by contribution assumption: employee only about $179,483 at 4% or $119,655 at 6%; with 50% employer match about $119,655 at 4% or $79,770 at 6%; with 100% employer match about $89,741 at 4% or $59,828 at 6%.
Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan-536$84,340,403$3,848,109$7,179iApproximate average salary by contribution assumption: employee only about $179,483 at 4% or $119,655 at 6%; with 50% employer match about $119,655 at 4% or $79,770 at 6%; with 100% employer match about $89,741 at 4% or $59,828 at 6%.
The Northshore Mining Company and Silver Bay Power Company Welfare Benefit Plan-532---
20082557$58,872,675$11,819,393$21,220iApproximate average salary by contribution assumption: employee only about $530,493 at 4% or $353,662 at 6%; with 50% employer match about $353,662 at 4% or $235,775 at 6%; with 100% employer match about $265,247 at 4% or $176,831 at 6%.
Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan-557$58,872,675$11,819,393$21,220iApproximate average salary by contribution assumption: employee only about $530,493 at 4% or $353,662 at 6%; with 50% employer match about $353,662 at 4% or $235,775 at 6%; with 100% employer match about $265,247 at 4% or $176,831 at 6%.
The Northshore Mining Company and Silver Bay Power Company Welfare Benefit Plan-557---
20072518$77,032,811$7,443,777$14,370iApproximate average salary by contribution assumption: employee only about $359,256 at 4% or $239,504 at 6%; with 50% employer match about $239,504 at 4% or $159,669 at 6%; with 100% employer match about $179,628 at 4% or $119,752 at 6%.
Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan-514$77,032,811$7,443,777$14,482iApproximate average salary by contribution assumption: employee only about $362,051 at 4% or $241,368 at 6%; with 50% employer match about $241,368 at 4% or $160,912 at 6%; with 100% employer match about $181,026 at 4% or $120,684 at 6%.
The Northshore Mining Company and Silver Bay Power Company Welfare Benefit Plan-518---
20062511$63,016,044$8,316,341$16,275iApproximate average salary by contribution assumption: employee only about $406,866 at 4% or $271,244 at 6%; with 50% employer match about $271,244 at 4% or $180,829 at 6%; with 100% employer match about $203,433 at 4% or $135,622 at 6%.
Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan-507$63,016,044$8,316,341$16,403iApproximate average salary by contribution assumption: employee only about $410,076 at 4% or $273,384 at 6%; with 50% employer match about $273,384 at 4% or $182,256 at 6%; with 100% employer match about $205,038 at 4% or $136,692 at 6%.
The Northshore Mining Company and Silver Bay Power Company Welfare Benefit Plan-511---
20052498$53,437,273$7,436,567$14,933iApproximate average salary by contribution assumption: employee only about $373,322 at 4% or $248,881 at 6%; with 50% employer match about $248,881 at 4% or $165,921 at 6%; with 100% employer match about $186,661 at 4% or $124,441 at 6%.
Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan-498$53,437,273$7,436,567$14,933iApproximate average salary by contribution assumption: employee only about $373,322 at 4% or $248,881 at 6%; with 50% employer match about $248,881 at 4% or $165,921 at 6%; with 100% employer match about $186,661 at 4% or $124,441 at 6%.
The Northshore Mining Company and Silver Bay Power Company Welfare Benefit Plan-498---
20042489$47,062,449$5,195,004$10,624iApproximate average salary by contribution assumption: employee only about $265,593 at 4% or $177,062 at 6%; with 50% employer match about $177,062 at 4% or $118,041 at 6%; with 100% employer match about $132,797 at 4% or $88,531 at 6%.
Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan-489$47,062,449$5,195,004$10,624iApproximate average salary by contribution assumption: employee only about $265,593 at 4% or $177,062 at 6%; with 50% employer match about $177,062 at 4% or $118,041 at 6%; with 100% employer match about $132,797 at 4% or $88,531 at 6%.
The Northshore Mining Company and Silver Bay Power Company Welfare Benefit Plan-489---
20032487$36,858,223$3,074,131$6,312iApproximate average salary by contribution assumption: employee only about $157,810 at 4% or $105,206 at 6%; with 50% employer match about $105,206 at 4% or $70,138 at 6%; with 100% employer match about $78,905 at 4% or $52,603 at 6%.
Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan-487$36,858,223$3,074,131$6,312iApproximate average salary by contribution assumption: employee only about $157,810 at 4% or $105,206 at 6%; with 50% employer match about $105,206 at 4% or $70,138 at 6%; with 100% employer match about $78,905 at 4% or $52,603 at 6%.
The Northshore Mining Company and Silver Bay Power Company Welfare Benefit Plan-487---
20022501$28,641,708$2,944,956$5,878iApproximate average salary by contribution assumption: employee only about $146,954 at 4% or $97,969 at 6%; with 50% employer match about $97,969 at 4% or $65,313 at 6%; with 100% employer match about $73,477 at 4% or $48,985 at 6%.
Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan-501$28,641,708$2,944,956$5,878iApproximate average salary by contribution assumption: employee only about $146,954 at 4% or $97,969 at 6%; with 50% employer match about $97,969 at 4% or $65,313 at 6%; with 100% employer match about $73,477 at 4% or $48,985 at 6%.
The Northshore Mining Company and Silver Bay Power Company Welfare Benefit Plan-501---
20012523$30,902,088$2,991,289$5,719iApproximate average salary by contribution assumption: employee only about $142,987 at 4% or $95,325 at 6%; with 50% employer match about $95,325 at 4% or $63,550 at 6%; with 100% employer match about $71,494 at 4% or $47,662 at 6%.
Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan-523$30,902,088$2,991,289$5,719iApproximate average salary by contribution assumption: employee only about $142,987 at 4% or $95,325 at 6%; with 50% employer match about $95,325 at 4% or $63,550 at 6%; with 100% employer match about $71,494 at 4% or $47,662 at 6%.
The Northshore Mining Company and Silver Bay Power Company Welfare Benefit Plan-504---
20002523$30,768,497$3,453,087$6,602iApproximate average salary by contribution assumption: employee only about $165,062 at 4% or $110,041 at 6%; with 50% employer match about $110,041 at 4% or $73,361 at 6%; with 100% employer match about $82,531 at 4% or $55,021 at 6%.
Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan-523$30,768,497$3,453,087$6,602iApproximate average salary by contribution assumption: employee only about $165,062 at 4% or $110,041 at 6%; with 50% employer match about $110,041 at 4% or $73,361 at 6%; with 100% employer match about $82,531 at 4% or $55,021 at 6%.
The Northshore Mining Company and Silver Bay Power Company Welfare Benefit Plan-523---
19993513$30,899,429$3,359,512$6,549iApproximate average salary by contribution assumption: employee only about $163,719 at 4% or $109,146 at 6%; with 50% employer match about $109,146 at 4% or $72,764 at 6%; with 100% employer match about $81,859 at 4% or $54,573 at 6%.
Northshore Mining Company and Silver Bay Power Company Retirement Savings Plan-513$30,899,429$3,088,756$6,021iApproximate average salary by contribution assumption: employee only about $150,524 at 4% or $100,349 at 6%; with 50% employer match about $100,349 at 4% or $66,900 at 6%; with 100% employer match about $75,262 at 4% or $50,175 at 6%.
Retirement Plan for Employees of Northshore Mining Company and Silver Bay Power Company-0-$270,756-
The Northshore Mining Company and Silver Bay Power Company Welfare Benefit Plan-513---