Skip to the page

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.

SpecStream is the live web data engine for teams and agents. It reads the mine, citation, inspection and accident files that MSHA publishes, and this page is that reading. Ask for the mines of a commodity, state or operator with the operator's headquarters, website and size added from the web, and new mines, new citations and new accident reports arrive in your sheet, CRM, Slack or agent as MSHA posts them.

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

OperatorOpen minesEmployeesCitations since 2022Proposed penaltiesInjury cases
River City Stone Division Of Mathy Construction Co73187135$27,67046
Taylor Northwest, LLC2934$7,5391

Mines with the most citations

MineOperatorCountyMain commodityEmployeesCitations since 2022
Portable Crusher #1Taylor Northwest, LLCDeschutes County, ORCrushed, broken stone722
K500River City Stone Division Of Mathy Construction CoSt Louis County, MNConstruction sand and gravel212
Portable Crusher 3Taylor Northwest, LLCDeschutes County, ORCrushed, broken basalt212
Plant #66River City Stone Division Of Mathy Construction CoLa Crosse County, WICrushed, broken limestone39
Plant #64River City Stone Division Of Mathy Construction CoWabasha County, MNCrushed, broken limestone37
Grayhawk HP 400River City Stone Division Of Mathy Construction CoSt Louis County, MNConstruction sand and gravel26
Plant #69River City Stone Division Of Mathy Construction CoSauk County, WICrushed, broken limestone26
Plant 21River City Stone Division Of Mathy Construction CoClark County, WICrushed, broken limestone26
Plant 22River City Stone Division Of Mathy Construction CoClark County, WICrushed, broken limestone06
Plant #43River City Stone Division Of Mathy Construction CoSauk County, WICrushed, broken limestone35
Plant #20River City Stone Division Of Mathy Construction CoDubuque County, IACrushed, broken limestone25
Plant #55River City Stone Division Of Mathy Construction CoJackson County, MNConstruction sand and gravel15
Plant #32River City Stone Division Of Mathy Construction CoMonroe County, WICrushed, broken limestone84
Plant #30River City Stone Division Of Mathy Construction CoLa Crosse County, WICrushed, broken limestone34
Plant #91River City Stone Division Of Mathy Construction CoJackson County, WIConstruction sand and gravel34
Plant 78River City Stone Division Of Mathy Construction CoEau Claire County, WIConstruction sand and gravel24
Plant #38River City Stone Division Of Mathy Construction CoLa Crosse County, WICrushed, broken limestone63
Plant #73River City Stone Division Of Mathy Construction CoLa Crosse County, WIConstruction sand and gravel33
Plant #71River City Stone Division Of Mathy Construction CoLa Crosse County, WIConstruction sand and gravel23
Plant #36River City Stone Division Of Mathy Construction CoWinona County, MNConstruction sand and gravel13
Plant #37River City Stone Division Of Mathy Construction CoOlmsted County, MNCrushed, broken limestone13
Plant #61River City Stone Division Of Mathy Construction CoLa Crosse County, WICrushed, broken limestone13
K400River City Stone Division Of Mathy Construction CoSt Louis County, MNSand, common32
Plant #29River City Stone Division Of Mathy Construction CoLa Crosse County, WICrushed, broken limestone32
Plant #28River City Stone Division Of Mathy Construction CoLa Crosse County, WIConstruction sand and gravel32
Plant #51River City Stone Division Of Mathy Construction CoLa Crosse County, WICrushed, broken limestone32
Plant 82River City Stone Division Of Mathy Construction CoLa Crosse County, WIConstruction sand and gravel32
Wash PlantRiver City Stone Division Of Mathy Construction CoSt Louis County, MNConstruction sand and gravel22
Plant #31River City Stone Division Of Mathy Construction CoWabasha County, MNConstruction sand and gravel22
Plant 77River City Stone Division Of Mathy Construction CoLa Crosse County, WIConstruction sand and gravel22
Plant #57River City Stone Division Of Mathy Construction CoLa Crosse County, WIConstruction sand and gravel12
Plant #67River City Stone Division Of Mathy Construction CoLa Crosse County, WIConstruction sand and gravel12
Plant #33River City Stone Division Of Mathy Construction CoLa Crosse County, WIConstruction sand and gravel51
Plant #81River City Stone Division Of Mathy Construction CoSt Croix County, WIConstruction sand and gravel51
Plant 80River City Stone Division Of Mathy Construction CoDunn County, WISand, common41
Plant 87River City Stone Division Of Mathy Construction CoLa Crosse County, WIConstruction sand and gravel41
Plant #42River City Stone Division Of Mathy Construction CoSauk County, WICrushed, broken limestone31
Plant #26River City Stone Division Of Mathy Construction CoMarathon County, WIConstruction sand and gravel31
Plant 83River City Stone Division Of Mathy Construction CoLa Crosse County, WIConstruction sand and gravel31
Plant #34River City Stone Division Of Mathy Construction CoLa Crosse County, WIConstruction sand and gravel21
Plant #13River City Stone Division Of Mathy Construction CoSauk County, WICrushed, broken limestone21
Plant #46River City Stone Division Of Mathy Construction CoSauk County, WICrushed, broken limestone21
Plant 92River City Stone Division Of Mathy Construction CoJackson County, WISand, industrial21
Plant #40River City Stone Division Of Mathy Construction CoLa Crosse County, WIConstruction sand and gravel11
Plant #70River City Stone Division Of Mathy Construction CoSauk County, WICrushed, broken limestone11
Plant #14River City Stone Division Of Mathy Construction CoLa Crosse County, WIConstruction sand and gravel11
Plant #53River City Stone Division Of Mathy Construction CoLa Crosse County, WICrushed, broken limestone90
Plant #90River City Stone Division Of Mathy Construction CoClark County, WIConstruction sand and gravel60
Plant #48River City Stone Division Of Mathy Construction CoSauk County, WICrushed, broken limestone40
Plant #45River City Stone Division Of Mathy Construction CoSauk County, WICrushed, broken limestone40
Plant #35River City Stone Division Of Mathy Construction CoLa Crosse County, WIConstruction sand and gravel30
Plant #39River City Stone Division Of Mathy Construction CoLa Crosse County, WIConstruction sand and gravel30
Plant #44River City Stone Division Of Mathy Construction CoSauk County, WICrushed, broken limestone30
Plant #41River City Stone Division Of Mathy Construction CoSauk County, WICrushed, broken limestone30
Plant #12River City Stone Division Of Mathy Construction CoSauk County, WICrushed, broken limestone30
Plant #50River City Stone Division Of Mathy Construction CoLa Crosse County, WIConstruction sand and gravel30
Plant #59River City Stone Division Of Mathy Construction CoLa Crosse County, WICrushed, broken limestone30
Plant #86River City Stone Division Of Mathy Construction CoSauk County, WICrushed, broken limestone30
Plant 84River City Stone Division Of Mathy Construction CoLa Crosse County, WIConstruction sand and gravel30
Plant 52River City Stone Division Of Mathy Construction CoClark County, WICrushed, broken limestone20
Plant #94River City Stone Division Of Mathy Construction CoSauk County, WICrushed, broken limestone20
Plant #24River City Stone Division Of Mathy Construction CoSauk County, WIConstruction sand and gravel20
Plant #88River City Stone Division Of Mathy Construction CoDunn County, WIConstruction sand and gravel20
Plant #72River City Stone Division Of Mathy Construction CoSauk County, WICrushed, broken limestone20
Plant #18River City Stone Division Of Mathy Construction CoMarathon County, WIConstruction sand and gravel20
Plant #74River City Stone Division Of Mathy Construction CoBayfield County, WIConstruction sand and gravel20
Plant 93River City Stone Division Of Mathy Construction CoMonroe County, WISand, industrial20
Plant #99River City Stone Division Of Mathy Construction CoSauk County, WICrushed, broken limestone20
Plant #85River City Stone Division Of Mathy Construction CoSauk County, WICrushed, broken limestone20
Plant #89River City Stone Division Of Mathy Construction CoClark County, WIConstruction sand and gravel10
Plant #47River City Stone Division Of Mathy Construction CoLa Crosse County, WICrushed, broken limestone10
Plant #75River City Stone Division Of Mathy Construction CoRichland County, WIConstruction sand and gravel10
Plant #17River City Stone Division Of Mathy Construction CoLa Crosse County, WIConstruction sand and gravel10
Plant 76River City Stone Division Of Mathy Construction CoLa Crosse County, WIConstruction sand and gravel10
Plant #79River City Stone Division Of Mathy Construction CoMonroe County, WIConstruction sand and gravel10

States

StateOpen mines
Wisconsin63
Minnesota9
Oregon2
Iowa1

Commodities

Citations and injury cases by year

Calendar years since 2022; 2026 runs to the date of the MSHA files.

YearCitations and ordersSignificant and substantialProposed penaltiesInjury and illness cases
2022232$3,4898
2023589$15,63710
2024251$4,9297
2025393$6,88513
2026243$4,2699

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.

StandardWhat the part coversCitations
30 CFR 56.12004Surface metal and nonmetal mines23
30 CFR 56.14132Surface metal and nonmetal mines11
30 CFR 56.14107Surface metal and nonmetal mines11
30 CFR 50.30Reporting of accidents, injuries and illnesses9
30 CFR 56.14100Surface metal and nonmetal mines8
30 CFR 56.12008Surface metal and nonmetal mines8
30 CFR 56.4201Surface metal and nonmetal mines7
30 CFR 46.9Training at sand, gravel and surface stone mines5
30 CFR 56.11002Surface metal and nonmetal mines5
30 CFR 56.14207Surface metal and nonmetal mines5
30 CFR 56.12028Surface metal and nonmetal mines4
30 CFR 56.11001Surface metal and nonmetal mines4
30 CFR 56.9300Surface metal and nonmetal mines4
30 CFR 56.20003Surface metal and nonmetal mines4
30 CFR 56.14101Surface metal and nonmetal mines3

Injury and illness cases at mines controlled by Mathy Construction Company

Accident reports by degree of injury, as the operator reported them to MSHA.

DegreeCases
Days away from work or restricted activity31
No lost time, or an occupational illness16

What the accident reports at mines controlled by Mathy Construction Company describe

Accident classification, as MSHA codes the circumstances that contributed most directly.

ClassificationReports
Handling of materials17
Handtools (nonpowered)10
Machinery8
Slip or fall of person7
Powered haulage3
Other2

Equipment named in accident reports at mines controlled by Mathy Construction Company

EquipmentReports
Hand tools (not powered)10
Hand tools (powered)6
Ore haulage trucks - off highway trucks3
Welding machine2
Front-end loader1

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.