Industry · Form 5500 business code 212390
Other Nonmetallic Mineral Mining & Quarrying: retirement plans
Plans whose sponsor entered this principal business activity code on Form 5500.
Form 5500 information is as filed by the plan administrator with the Department of Labor and may be amended. Figures reflect the plan year shown, not current balances. The business code is chosen by the filer from the list in the Form 5500 instructions.
For plan year 2024, 28 retirement plans in other nonmetallic mineral mining & quarrying with 100 or more participants filed Form 5500: 22 defined contribution and 6 defined benefit. They reported 18,132 participant records and $1.98B in net assets, counting every plan on the form.
The median defined contribution plan held $94,818 per participant, well above the national median of $53,031, and its employer put in $4,587 per active participant (national: $2,174). Among plans reporting Schedule C compensation the median was $152 per participant against $123 nationally.
Employers contributed $60.0M and participants $69.4M during the year, and the plans paid out $195M in benefits.
In 2009 the same group numbered 42 plans with $1.43B; by 2024 it was 28 plans (down 33%) and $1.98B (up 38%). From plan year 2023 the 100-participant line counts participants with account balances, which moved many plans to the short form.
Medians compared with all US plans
| Median plan, plan year 2024 | Industry: DC | US: DC | Industry: DB | US: DB |
|---|---|---|---|---|
| Net assets per participant | $94,818 | $53,031 | $111,462 | $86,234 |
| Employer contributions per active participant | $4,587 | $2,174 | $8,345 | $10,244 |
| Schedule C compensation per participant | $152 | $123 | $138 | $344 |
| Schedule C compensation, share of net assets | 0.22% | 0.26% | 0.27% | 0.42% |
| Administrative expenses per participant | $169 | $116 | $278 | $527 |
Medians across plans with 100 or more participants (22 DC and 6 DB plans with a Schedule H here). Fee medians cover plans reporting an amount. DC: defined contribution, such as 401(k) and 403(b). DB: defined benefit pension.
Distribution of DC plans
| Measure | 25th percentile | Median | 75th percentile | Plans |
|---|---|---|---|---|
| Net assets per participant | $76,220 | $94,818 | $125,641 | 22 |
| Employer contributions per active participant | $3,693 | $4,587 | $6,164 | 22 |
| Schedule C compensation per participant | $111 | $152 | $273 | 21 |
| Administrative expenses per participant | $113 | $169 | $255 | 22 |
Trend by plan year
| Plan year | Plans 100+ | Participants | Net assets | Employer contributions | Participant contributions | Median DC assets / participant | Median DC Sch. C / participant |
|---|---|---|---|---|---|---|---|
| 2024 | 28 | 18,132 | $1.98B | $60.0M | $69.4M | $94,818 | $152 |
| 2023 | 30 | 19,460 | $1.81B | $86.1M | $67.7M | $85,787 | $118 |
| 2022 | 33 | 18,908 | $1.61B | $61.9M | $62.8M | $72,135 | $155 |
| 2021 | 36 | 18,988 | $2.05B | $44.2M | $60.3M | $92,491 | $147 |
| 2020 | 35 | 19,862 | $1.90B | $51.0M | $56.0M | $86,799 | $88.86 |
| 2019 | 39 | 20,422 | $1.88B | $61.6M | $58.2M | $79,919 | $72.97 |
| 2018 | 42 | 20,112 | $1.61B | $65.3M | $54.1M | $63,015 | $77.76 |
| 2017 | 37 | 20,997 | $1.69B | $92.6M | $56.2M | $67,166 | $70.70 |
| 2016 | 40 | 24,292 | $1.55B | $72.8M | $54.5M | $50,689 | $85.11 |
| 2015 | 41 | 24,390 | $1.56B | $61.8M | $50.0M | $44,863 | $84.52 |
| 2014 | 37 | 22,323 | $1.59B | $54.0M | $51.1M | $47,899 | $49.73 |
| 2013 | 39 | 24,249 | $1.53B | $70.0M | $50.2M | $49,808 | $62.51 |
| 2012 | 44 | 24,528 | $1.36B | $71.5M | $49.5M | $44,129 | $27.81 |
| 2011 | 44 | 23,798 | $1.16B | $68.1M | $41.4M | $40,868 | $34.23 |
| 2010 | 42 | 21,163 | $1.00B | $49.0M | $28.4M | $33,513 | $38.08 |
| 2009 | 42 | 26,493 | $1.43B | $75.6M | $37.3M | $33,053 | $28.24 |
Plan year is the year in which the plan year began. The drop in large plans from 2023 follows a rule change: the 100-participant line now counts participants with account balances, so many plans moved to the short form.
Provider share
Service provider organisations named most often on the Schedule C of the 29 plans on this page's list, by number of plans. A plan usually names several providers.
Largest plans
The 29 largest by participants of 29 plans with a page on this site.
| Plan | Sponsor | State | Type | Participants | Net assets | Per participant | Employer / active | Sch. C / participant |
|---|---|---|---|---|---|---|---|---|
| Morton Salt 401(k) Savings Plan | Morton Investment Company LLC | KS | DC | 2,815 | $356M | $126,632 | $4,347 | $84.16 |
| Imerys USA, Inc. Retirement Growth Account Plan | Imerys USA, Inc. | GA | DB | 1,995 | $172M | $86,016 | $8,356 | — |
| Compass Minerals International, Inc. 401(k) Savings Plan | Compass Minerals International, Inc. | KS | DC | 1,285 | $182M | $141,786 | $5,242 | $214 |
| Genesis Alkali, LLC Savings Investment Plan | Genesis Energy, LLC | TX | DC | 1,193 | $127M | $106,267 | $6,968 | $61.50 |
| MP Materials Corp. 401(k) Plan | MP Materials Corp. | NV | DC | 1,083 | $35.4M | $32,653 | $3,675 | $168 |
| Genesis Alkali, LLC Union Retirement Plan | Genesis Alkali, LLC | PA | DB | 1,004 | $49.4M | $49,156 | $7,845 | $130 |
| Texas United Corporation Pension Plan | Texas United Corporation | TX | DB | 862 | $143M | $166,195 | $8,333 | $738 |
| Minerals Technologies Inc. Retirement Plan - Pc&e | Amcol International Corporation | NY | DB | 819 | $89.9M | $109,825 | $9,009 | $138 |
| U.S. Borax Inc. 401(k) Savings & Retirement Contribution Plan for Represented Employees | U.S. Borax Inc. | UT | DC | 810 | $76.2M | $94,065 | $3,749 | $49.53 |
| Thiele Kaolin Company Retirement Savings Plan | Thiele Kaolin Company | GA | DC | 777 | $174M | $224,018 | $8,801 | $42.21 |
| Texas United Corporation 401(k) Plan | Texas United Corporation | TX | DC | 687 | $80.8M | $117,656 | $2,676 | $119 |
| Intrepid Potash, Inc. Employee Savings Plan | Intrepid Potash, Inc. | CO | DC | 669 | $63.9M | $95,570 | $4,407 | $257 |
| Rango, Inc. 401(k) Plan | Rango, Inc. | AZ | DC | 659 | $8.8M | $13,334 | $1,690 | $104 |
| American Rock Salt Company 401(k) Plan | American Rock Salt Company LLC | NY | DC | 463 | $41.8M | $90,200 | $3,674 | $249 |
| National Ewp, Inc. 401(k) Plan | National Ewp, Inc. | NV | DC | 449 | $18.6M | $41,517 | $3,753 | $262 |
| Halquist Stone Company, Inc. 401(k) Profit Sharing Plan | Halquist Stone Company, Inc. | WI | DC | 375 | $32.1M | $85,516 | $2,407 | $227 |
| Coughlan Companies Retirement Plan | Coughlan Companies, LLC | MN | DC | 333 | $38.3M | $115,053 | $3,977 | $111 |
| Washington Mills Management, Inc. 401(k) & Profit Sharing Plan | Washington Mills Management, Inc. | NY | DC | 321 | $72.6M | $226,248 | $5,349 | $394 |
| Richwood Industries, Inc. Retirement & 401(k) Plan | Richwood Industries, Inc. | WV | DC | 315 | $18.5M | $58,653 | $2,400 | — |
| Magris Talc USA, Inc. 401(k) Plan | Magris Talc USA, Inc. | DE | DC | 280 | $35.7M | $127,396 | $7,142 | $494 |
| The Barton Group Pension Plan | The Barton Group | NY | DB | 225 | $25.4M | $113,099 | $29,858 | $573 |
| Graymont U.s.non-Union Defined Benefit Pension Plan | Graymont Inc. | — | DB | 192 | $55.2M | $287,506 | $0 | $46.72 |
| Allegheny Mineral Company Employee Profit Sharing Plan | Allegheny Mineral Company | PA | DC | 188 | $16.6M | $88,397 | $6,714 | $147 |
| The Barton Group 401(k) Plan | Barton Mines Corporation | NY | DC | 187 | $38.4M | $205,439 | $4,766 | $446 |
| S.M. Lorusso & Sons, Inc. 401(k) Plan | S.M. Lorusso & Sons, Inc. | MA | DC | 178 | $25.5M | $143,433 | $7,282 | $335 |
| Pci Nitrogen LLC Hourly Savings Plan | Pci Nitrogen, LLC | TX | DC | 135 | $8.2M | $60,381 | $5,059 | $152 |
| Bluff City Materials, Inc. 401(k) Plan | Bluff City Materials, Inc. | IL | DC | 134 | $12.1M | $90,426 | $4,865 | $250 |
| Agc 401(k) Plan | American Gilsonite Company | UT | DC | 118 | $8.6M | $73,121 | $6,304 | $46.15 |
| Empresas Ortiz Brunet, Inc. 1081.0.1(D) Plan | Empresas Ortiz Brunet, Inc. | PR | DC | 101 | — | — | — | — |
By plan size
By state
Questions and answers
How many retirement plans are there in other nonmetallic mineral mining & quarrying?
28 plans with 100 or more participants filed Form 5500 for plan year 2024, out of 34 pension plans on the full form. Smaller plans file Form 5500-SF and are counted separately where shown.
What is the typical 401(k) balance in other nonmetallic mineral mining & quarrying?
The median defined contribution plan reported $94,818 in net assets per participant (middle half of plans: $76,220 to $125,641); nationally it was $53,031. This is a plan-level average that includes former employees, not a typical person's balance.
What do employers contribute in other nonmetallic mineral mining & quarrying?
The median defined contribution plan received $4,587 in employer contributions per active participant, against $2,174 nationally. Plans with no employer contribution are included at zero.
What are average 401(k) fees in other nonmetallic mineral mining & quarrying?
Among defined contribution plans that report any Schedule C compensation, the median was $152 per participant and 0.22% of net assets (nationally $123 and 0.26%). Schedule C leaves out fund expense ratios and fees the employer pays, so it understates total cost.
Where does this come from?
Form 5500 annual reports in the EBSA research files, with filings received through 24 Aug 2026. Medians are computed by this site across plans with 100 or more participants.
Provenance
Source: U.S. Department of Labor, Employee Benefits Security Administration, Form 5500 research files, public domain, with filings received through 24 Aug 2026. Totals count every pension plan on the full form; medians and the plan list cover plans with 100 or more participants. See the methodology.