Data / Mines / Mathy Construction Company
Mathy Construction Company: 75 open mines
Mathy Construction Company (MSHA controller ID M00893) controls 75 open mines through 2 operators, with 196 employees in 4 states, mostly construction sand and gravel. Since January 1, 2022 MSHA issued 169 citations and orders at those mines with $35,209 in proposed penalties, and operators reported 47 injury or illness cases. Data from MSHA, November 6, 2026.
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- MSHA controller ID
- M00893
- Open mines
- 75
- Operators
- 2
- Employees
- 196
- States
- 4
- Citations and orders since January 1, 2022
- 169
- Significant and substantial
- 18 (10.7%)
- Closure orders
- 2
- High negligence or reckless
- 10
- Proposed penalties
- $35,209
- Amount paid so far
- $29,998
- Inspections
- 515
- Inspector hours on site
- 2,163
- Citations per inspection
- 0.33 (all mines 2.30)
- Accident reports
- 47
- Injury and illness cases
- 47
- Fatalities
- 0
- Latest MSHA record
- November 4, 2026
Operators under Mathy Construction Company
| Operator | Open mines | Employees | Citations since 2022 | Proposed penalties | Injury cases |
|---|---|---|---|---|---|
| River City Stone Division Of Mathy Construction Co | 73 | 187 | 135 | $27,670 | 46 |
| Taylor Northwest, LLC | 2 | 9 | 34 | $7,539 | 1 |
Mines with the most citations
| Mine | Operator | County | Main commodity | Employees | Citations since 2022 |
|---|---|---|---|---|---|
| Portable Crusher #1 | Taylor Northwest, LLC | Deschutes County, OR | Crushed, broken stone | 7 | 22 |
| K500 | River City Stone Division Of Mathy Construction Co | St Louis County, MN | Construction sand and gravel | 2 | 12 |
| Portable Crusher 3 | Taylor Northwest, LLC | Deschutes County, OR | Crushed, broken basalt | 2 | 12 |
| Plant #66 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Crushed, broken limestone | 3 | 9 |
| Plant #64 | River City Stone Division Of Mathy Construction Co | Wabasha County, MN | Crushed, broken limestone | 3 | 7 |
| Grayhawk HP 400 | River City Stone Division Of Mathy Construction Co | St Louis County, MN | Construction sand and gravel | 2 | 6 |
| Plant #69 | River City Stone Division Of Mathy Construction Co | Sauk County, WI | Crushed, broken limestone | 2 | 6 |
| Plant 21 | River City Stone Division Of Mathy Construction Co | Clark County, WI | Crushed, broken limestone | 2 | 6 |
| Plant 22 | River City Stone Division Of Mathy Construction Co | Clark County, WI | Crushed, broken limestone | 0 | 6 |
| Plant #43 | River City Stone Division Of Mathy Construction Co | Sauk County, WI | Crushed, broken limestone | 3 | 5 |
| Plant #20 | River City Stone Division Of Mathy Construction Co | Dubuque County, IA | Crushed, broken limestone | 2 | 5 |
| Plant #55 | River City Stone Division Of Mathy Construction Co | Jackson County, MN | Construction sand and gravel | 1 | 5 |
| Plant #32 | River City Stone Division Of Mathy Construction Co | Monroe County, WI | Crushed, broken limestone | 8 | 4 |
| Plant #30 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Crushed, broken limestone | 3 | 4 |
| Plant #91 | River City Stone Division Of Mathy Construction Co | Jackson County, WI | Construction sand and gravel | 3 | 4 |
| Plant 78 | River City Stone Division Of Mathy Construction Co | Eau Claire County, WI | Construction sand and gravel | 2 | 4 |
| Plant #38 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Crushed, broken limestone | 6 | 3 |
| Plant #73 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Construction sand and gravel | 3 | 3 |
| Plant #71 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Construction sand and gravel | 2 | 3 |
| Plant #36 | River City Stone Division Of Mathy Construction Co | Winona County, MN | Construction sand and gravel | 1 | 3 |
| Plant #37 | River City Stone Division Of Mathy Construction Co | Olmsted County, MN | Crushed, broken limestone | 1 | 3 |
| Plant #61 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Crushed, broken limestone | 1 | 3 |
| K400 | River City Stone Division Of Mathy Construction Co | St Louis County, MN | Sand, common | 3 | 2 |
| Plant #29 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Crushed, broken limestone | 3 | 2 |
| Plant #28 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Construction sand and gravel | 3 | 2 |
| Plant #51 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Crushed, broken limestone | 3 | 2 |
| Plant 82 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Construction sand and gravel | 3 | 2 |
| Wash Plant | River City Stone Division Of Mathy Construction Co | St Louis County, MN | Construction sand and gravel | 2 | 2 |
| Plant #31 | River City Stone Division Of Mathy Construction Co | Wabasha County, MN | Construction sand and gravel | 2 | 2 |
| Plant 77 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Construction sand and gravel | 2 | 2 |
| Plant #57 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Construction sand and gravel | 1 | 2 |
| Plant #67 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Construction sand and gravel | 1 | 2 |
| Plant #33 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Construction sand and gravel | 5 | 1 |
| Plant #81 | River City Stone Division Of Mathy Construction Co | St Croix County, WI | Construction sand and gravel | 5 | 1 |
| Plant 80 | River City Stone Division Of Mathy Construction Co | Dunn County, WI | Sand, common | 4 | 1 |
| Plant 87 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Construction sand and gravel | 4 | 1 |
| Plant #42 | River City Stone Division Of Mathy Construction Co | Sauk County, WI | Crushed, broken limestone | 3 | 1 |
| Plant #26 | River City Stone Division Of Mathy Construction Co | Marathon County, WI | Construction sand and gravel | 3 | 1 |
| Plant 83 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Construction sand and gravel | 3 | 1 |
| Plant #34 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Construction sand and gravel | 2 | 1 |
| Plant #13 | River City Stone Division Of Mathy Construction Co | Sauk County, WI | Crushed, broken limestone | 2 | 1 |
| Plant #46 | River City Stone Division Of Mathy Construction Co | Sauk County, WI | Crushed, broken limestone | 2 | 1 |
| Plant 92 | River City Stone Division Of Mathy Construction Co | Jackson County, WI | Sand, industrial | 2 | 1 |
| Plant #40 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Construction sand and gravel | 1 | 1 |
| Plant #70 | River City Stone Division Of Mathy Construction Co | Sauk County, WI | Crushed, broken limestone | 1 | 1 |
| Plant #14 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Construction sand and gravel | 1 | 1 |
| Plant #53 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Crushed, broken limestone | 9 | 0 |
| Plant #90 | River City Stone Division Of Mathy Construction Co | Clark County, WI | Construction sand and gravel | 6 | 0 |
| Plant #48 | River City Stone Division Of Mathy Construction Co | Sauk County, WI | Crushed, broken limestone | 4 | 0 |
| Plant #45 | River City Stone Division Of Mathy Construction Co | Sauk County, WI | Crushed, broken limestone | 4 | 0 |
| Plant #35 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Construction sand and gravel | 3 | 0 |
| Plant #39 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Construction sand and gravel | 3 | 0 |
| Plant #44 | River City Stone Division Of Mathy Construction Co | Sauk County, WI | Crushed, broken limestone | 3 | 0 |
| Plant #41 | River City Stone Division Of Mathy Construction Co | Sauk County, WI | Crushed, broken limestone | 3 | 0 |
| Plant #12 | River City Stone Division Of Mathy Construction Co | Sauk County, WI | Crushed, broken limestone | 3 | 0 |
| Plant #50 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Construction sand and gravel | 3 | 0 |
| Plant #59 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Crushed, broken limestone | 3 | 0 |
| Plant #86 | River City Stone Division Of Mathy Construction Co | Sauk County, WI | Crushed, broken limestone | 3 | 0 |
| Plant 84 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Construction sand and gravel | 3 | 0 |
| Plant 52 | River City Stone Division Of Mathy Construction Co | Clark County, WI | Crushed, broken limestone | 2 | 0 |
| Plant #94 | River City Stone Division Of Mathy Construction Co | Sauk County, WI | Crushed, broken limestone | 2 | 0 |
| Plant #24 | River City Stone Division Of Mathy Construction Co | Sauk County, WI | Construction sand and gravel | 2 | 0 |
| Plant #88 | River City Stone Division Of Mathy Construction Co | Dunn County, WI | Construction sand and gravel | 2 | 0 |
| Plant #72 | River City Stone Division Of Mathy Construction Co | Sauk County, WI | Crushed, broken limestone | 2 | 0 |
| Plant #18 | River City Stone Division Of Mathy Construction Co | Marathon County, WI | Construction sand and gravel | 2 | 0 |
| Plant #74 | River City Stone Division Of Mathy Construction Co | Bayfield County, WI | Construction sand and gravel | 2 | 0 |
| Plant 93 | River City Stone Division Of Mathy Construction Co | Monroe County, WI | Sand, industrial | 2 | 0 |
| Plant #99 | River City Stone Division Of Mathy Construction Co | Sauk County, WI | Crushed, broken limestone | 2 | 0 |
| Plant #85 | River City Stone Division Of Mathy Construction Co | Sauk County, WI | Crushed, broken limestone | 2 | 0 |
| Plant #89 | River City Stone Division Of Mathy Construction Co | Clark County, WI | Construction sand and gravel | 1 | 0 |
| Plant #47 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Crushed, broken limestone | 1 | 0 |
| Plant #75 | River City Stone Division Of Mathy Construction Co | Richland County, WI | Construction sand and gravel | 1 | 0 |
| Plant #17 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Construction sand and gravel | 1 | 0 |
| Plant 76 | River City Stone Division Of Mathy Construction Co | La Crosse County, WI | Construction sand and gravel | 1 | 0 |
| Plant #79 | River City Stone Division Of Mathy Construction Co | Monroe County, WI | Construction sand and gravel | 1 | 0 |
States
Commodities
| Main commodity | Open mines |
|---|---|
| Construction sand and gravel | 37 |
| Crushed, broken limestone | 32 |
| Sand, common | 2 |
| Sand, industrial | 2 |
| Crushed, broken stone | 1 |
| Crushed, broken basalt | 1 |
Citations and injury cases by year
Calendar years since 2022; 2026 runs to the date of the MSHA files.
| Year | Citations and orders | Significant and substantial | Proposed penalties | Injury and illness cases |
|---|---|---|---|---|
| 2022 | 23 | 2 | $3,489 | 8 |
| 2023 | 58 | 9 | $15,637 | 10 |
| 2024 | 25 | 1 | $4,929 | 7 |
| 2025 | 39 | 3 | $6,885 | 13 |
| 2026 | 24 | 3 | $4,269 | 9 |
Standards cited most at mines controlled by Mathy Construction Company
Sections of Title 30 of the Code of Federal Regulations named on the citations, with the part each belongs to.
| Standard | What the part covers | Citations |
|---|---|---|
| 30 CFR 56.12004 | Surface metal and nonmetal mines | 23 |
| 30 CFR 56.14132 | Surface metal and nonmetal mines | 11 |
| 30 CFR 56.14107 | Surface metal and nonmetal mines | 11 |
| 30 CFR 50.30 | Reporting of accidents, injuries and illnesses | 9 |
| 30 CFR 56.14100 | Surface metal and nonmetal mines | 8 |
| 30 CFR 56.12008 | Surface metal and nonmetal mines | 8 |
| 30 CFR 56.4201 | Surface metal and nonmetal mines | 7 |
| 30 CFR 46.9 | Training at sand, gravel and surface stone mines | 5 |
| 30 CFR 56.11002 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.14207 | Surface metal and nonmetal mines | 5 |
| 30 CFR 56.12028 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.11001 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.9300 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.20003 | Surface metal and nonmetal mines | 4 |
| 30 CFR 56.14101 | Surface metal and nonmetal mines | 3 |
Injury and illness cases at mines controlled by Mathy Construction Company
Accident reports by degree of injury, as the operator reported them to MSHA.
| Degree | Cases |
|---|---|
| Days away from work or restricted activity | 31 |
| No lost time, or an occupational illness | 16 |
What the accident reports at mines controlled by Mathy Construction Company describe
Accident classification, as MSHA codes the circumstances that contributed most directly.
| Classification | Reports |
|---|---|
| Handling of materials | 17 |
| Handtools (nonpowered) | 10 |
| Machinery | 8 |
| Slip or fall of person | 7 |
| Powered haulage | 3 |
| Other | 2 |
Equipment named in accident reports at mines controlled by Mathy Construction Company
| Equipment | Reports |
|---|---|
| Hand tools (not powered) | 10 |
| Hand tools (powered) | 6 |
| Ore haulage trucks - off highway trucks | 3 |
| Welding machine | 2 |
| Front-end loader | 1 |
Updated November 6, 2026. Read from US Department of Labor, Mine Safety and Health Administration (MSHA), Open Government Data Sets. US government work, public domain. Counts come from the MSHA files published on November 6, 2026. An open mine is one MSHA lists as Active, Intermittent, New Mine, Temporarily Idled or NonProducing; 13,673 were open that day. Citations, penalties, inspections and accident reports run from January 1, 2022. A citation is an inspector's allegation and an operator can contest it; the penalty is the amount MSHA first proposed, before any contest or settlement. An operator is the legal entity MSHA assesses, and a parent company is its controller. Mines run by sole proprietors or by individuals are counted in every total and are not named. This page uses MSHA data and is not endorsed or certified by MSHA. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.