MSHA DATABASEMSHA records · 15 contributing sources · snapshot Oct 18, 2026

MINE DETAILS

Selma Plant Quarry & Mill

ActiveSurfaceCement
MSHA MINE ID2300188
LOCATIONJefferson, MO
PUBLIC RECORD13,894 linked rows

LOCATION

Mine location

1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.

Mine coordinates

2025-01-01 – 2026-10-18Applies to production, safety and portfolio metrics. Silica samples have separate filters.

Violations

111

17 significant & substantial (S&S)

  1. 2025 Q115
  2. 2025 Q220
  3. 2025 Q30
  4. 2025 Q422
  5. 2026 Q13
  6. 2026 Q235
  7. 2026 Q30
  8. 2026 Q4 *16

Accident records

20

0 records classified as fatality

  1. 2025 Q14
  2. 2025 Q23
  3. 2025 Q35
  4. 2025 Q41
  5. 2026 Q12
  6. 2026 Q24
  7. 2026 Q31
  8. 2026 Q4 *0

Proposed penalties · USD

65,068.00

94 of 111 violations with amounts

  1. 2025 Q123,018
  2. 2025 Q215,488
  3. 2025 Q3—
  4. 2025 Q411,691
  5. 2026 Q1511
  6. 2026 Q214,360
  7. 2026 Q3—
  8. 2026 Q4 *—

On-site inspection hours

418.50

20 inspections · 20 with hours

  1. 2025 Q16.00
  2. 2025 Q2113.75
  3. 2025 Q33.00
  4. 2025 Q4104.50
  5. 2026 Q16.50
  6. 2026 Q2149.25
  7. 2026 Q36.00
  8. 2026 Q4 *29.50
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q115123,018.004026.0
2025-Q220315,488.00302113.8
2025-Q300—5023.0
2025-Q422511,691.00102104.5
2026-Q130511.002046.5
2026-Q235514,360.00406149.3
2026-Q300—1016.0
2026-Q4 *163—00129.5

Most cited CFR sections

All violations issued in the selected period. Counts combine subsections.

Safety activity

  1. accident220262710024

    MACHINERY · DAYS AWAY FROM WORK ONLY

    Accident narrative

    EE on Preheat Tower found a water gun disconnected from its hose with the water valve closed. A miner asked on the radio if the "pressure was good" and they heard someone say "yes". When EE began to screw the hose coupling onto the gun, the other miner opened the water valve. High pressure water then shot out of the coupling and was injected with a piece of cloth into EE's hand.

  2. accident220261730038

    SLIP OR FALL OF PERSON · DYS AWY FRM WRK & RESTRCTD ACT

    Accident narrative

    EE walked up the stairs inside the Core Building when EE tripped on the third step, fell forward and used EE's right hand to catch self. EE struck the staircase with a clenched fist. EE noticed swelling on EE's right hand and immediately reported EE's injury to EE's supervisor. EE sustained a closed displaced fracture of neck of fifth metacarpal bone of right hand.

  3. accident220261340006

    HANDTOOLS (NONPOWERED) · NO DYS AWY FRM WRK,NO RSTR ACT

    Accident narrative

    EE was driving out a pin with a hammer for the finish mill hydraulic arm when the pin broke loose causing the punch EE was holding to shift pinching EE's left middle finger against the pin eye edge causing a laceration on EE's left ring finger.

  4. accident220261050021

    SLIP OR FALL OF PERSON · DAYS AWAY FROM WORK ONLY

    Accident narrative

    EE was walking in the crosswalk from the Employee Parking Lot towards the Main Office. When they got to the office sidewalk, they placed their left foot up on the sidewalk and was beginning to take a step up with their right foot when they lost balance and fell backwards striking their head on the crosswalk pavement.

  5. accident220261030029

    MACHINERY · NO DYS AWY FRM WRK,NO RSTR ACT

    Accident narrative

    EE was performing inspections when they noticed dust burping from the vent line above the feed bin on the fourth floor of the Preheat Tower. They said they looked up to identify where it was coming from when dust vented out and landed just above their glasses under the brim of their hat. Dust entered their left eye causing irritation. They received antibiotic ointment for the eye.

  6. accident220260430002

    MACHINERY · NO DYS AWY FRM WRK,NO RSTR ACT

    Accident narrative

    Employee was using a grinder throughout their work shift. Around 3:30PM they notified site safety coordinator about irritation in their right eye.

  7. accident220260350014

    SLIP OR FALL OF PERSON · NO DYS AWY FRM WRK,NO RSTR ACT

    Accident narrative

    EE was walking towards EE's office when EE tripped on a rug causing EE to fall forward landing on both knees. EE then noticed blood seeping through EE's jeans at the right knee. Upon inspecting knee, EE noticed a laceration measuring about 4 inches in length across EE's right knee. EE went to Mercy Jefferson ER where EE received 12 stitches to close the wound.

  8. accident220253170401

    HANDLING OF MATERIALS · DYS AWY FRM WRK & RESTRCTD ACT

    Accident narrative

    EE was inside manlift basket using a steel lance attached to a vacuum hose to clear material from apron feeder below. While vacuuming the material the hose became stuck and EE tried to free it by yanking on the lance. The hose broke free and EE's hand flew back striking the corner of the basket's railing breaking the 5th metacarpal bone in EE's right hand.

  9. accident220252690015

    HANDLING OF MATERIALS · DYS AWY FRM WRK & RESTRCTD ACT

    Accident narrative

    EE was pulling a Wright dump hopper from under the Clinker Cooler. While navigating through the "I" beams the hopper struck the edge of a beam causing the hopper to stop suddenly. EE's momentum continued backwards while gripping the hopper during which they heard a pop in left shoulder. EE immediately felt sharp pain in their shoulder/neck and reported it to a Supervisor.

  10. accident220252610005

    EXPLOSIVES AND BREAKING AGENTS · DAYS RESTRICTED ACTIVITY ONLY

    Accident narrative

    Employee was sitting on an I-Beam that was stacked on top of another I-Beam with wooden cribbing between the two I-Beams. Their left hand was down near the space between the 2 I-Beams. The wooden cribbing broke, pinching the tip of their left thumb.

  11. accident220252310025

    STEPPING OR KNEELING ON OBJECT · DAYS RESTRICTED ACTIVITY ONLY

    Accident narrative

    While cleaning in the 010 Conveyor area, employees noticed unusual material on the floor, but did not think it was concerning, assuming it was safe since spills or hot materials are normally barricaded. As one employee stepped to retrieve a shovel, the material gave way, and hot material entered their boots, causing a second-degree burn.

  12. accident220252550016

    HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY

    Accident narrative

    EE helped two workers lift a 4x8 screw lid back on top of its housing at Silo 17 Screw Floor. EE and workers lifted the lid onto the housing and began to push it into place when they heard a pop and felt slight pain in left shoulder. EE asked to see a doctor after pain persisted for 10 days. EE had surgery on 09/02/25 to correct a torn rotator cuff and bicep tendon.

  13. accident220252590016

    HANDLING OF MATERIALS · DYS AWY FRM WRK & RESTRCTD ACT

    Accident narrative

    Employee was removing a bracket and a grease injector assembly from the center arm of a wheel loader. When they removed the bracket that was over their head they felt something pull in their left shoulder and arm gave out. They have pain in their left shoulder. They saw doctor on 8/5/25 and started restricted duty on 9/8/25.

  14. accident220251880006

    HANDTOOLS (NONPOWERED) · NO DYS AWY FRM WRK,NO RSTR ACT

    Accident narrative

    EE used a hammer to strike the head of a 10" chisel to free a stuck idler on a belt conveyor. When EE struck the chisel EE felt a sharp pain in EE's left forearm and EE's arm bled. EE was taken to the hospital where EE received treatment for a foreign body puncture (metal from the chisel head). EE received two stitches after the doctor tried to unsuccessfully to remove the metal.

  15. accident220253300010

    HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY

    Accident narrative

    On 5/13/25 EE lifted an oil bucket onto a truck with right arm and felt pain in shoulder. EE told their supervisor but didn't seek medical evaluation. When the pain persisted EE requested a doctor's appointment and was seen on 06/25/25 where they were treated for strain of rotator cuff & prescribed PT. EE had MRI on 8/1 and then surgical repair of right rotator cuff on 11/20/25.

  16. accident220252030004

    DISORDERS (REPEATED TRAUMA) · OCCUPATNAL ILLNESS NOT DEG 1-6

    Accident narrative

    Employee reported to management on 4/1/25 of right and left hand/arm numbness. Nerve Conduction Study on 6/4/25 revealed right & left Carpal Tunnel Syndrome. EE had right hand surgery on 7/17/25 and will return to work after left hand surgery scheduled for 8/7/25 is completed.

  17. accident220250900009

    SLIP OR FALL OF PERSON · DAYS RESTRICTED ACTIVITY ONLY

    Accident narrative

    EE was assisting other Mechanics lift one leg of the Finish Mill 1 duplex compressor north compressor with a crowbar so shims could be placed under the leg. While lifting the motor, the end of the crowbar broke and flung back against employee causing EE to fall and twist EE's right ankle in the process.

  18. accident220251070004

    HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY

    Accident narrative

    EE was fueling EE's loader and when EE finished EE went to lower the rubber cover over the fuel cap. As EE reached for the cover EE jammed EE's left thumb on a bracket EE didn't see. MRI reveals left thumb tendon tear. Tendon transfer surgery performed on April 11, 2025.

  19. accident220250490034

    MACHINERY · DAYS AWAY FROM WORK ONLY

    Accident narrative

    EMPLOYEE WAS STANDING IN FRONT OF JOB TRAILER AND ONE OF THE NIGHT SHIFT FOREMEN INADVERTENTLY SHINED A LASER PEN IN THE EMPLOYEE'S DIRECTION STRIKING EE'S RIGHT EYE. THE EMPLOYEE CONTINUED TO WORK FOR THE NEXT TWO NIGHTS AND ON THE SECOND NIGHT EE REPORTED EE WAS SEEING WHITE SPOTS AND EE'S VISION WAS FUZZY AND WANTED TO BE SEEN BY A DOCTOR. EE WAS SEEN BY AN OPTOMETRIST.

  20. accident220251880007

    HANDLING OF MATERIALS · DYS AWY FRM WRK & RESTRCTD ACT

    Accident narrative

    On 1/21/25 EE was lying on EE's back with 2" of clearance while replacing screens on C114 Screen. EE completed job and while lying on EE's back EE had to push self uphill using EE's feet and elbows. EE reported to supervisor a shoulder strain. On 3/20/25 EE saw doctor for first time. EE was given an MRI that revealed right shoulder labrum tear. Surgery was performed on 6/26/25.

Safety sources and definitions

MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-18.

Counts describe published rows, including contractor records; accident records are not distinct incidents or numbers of people injured.

Zero means no matching records in the imported sources, not proof of no events. Historical coverage differs by source; absence before a source begins reporting is not a zero incident rate. Invalid or absent dates and records after the snapshot are excluded.

S&S means SIG_SUB=Y. Fatality records use DEGREE_INJURY_CD=01. Proposed penalties are not final assessed or paid amounts; missing dollar values are omitted.

Inspection hours are SUM_TOTAL_ON_SITE_HOURS attributed to the inspection start date, without supervisor/trainee hours. Missing hours are omitted; a started inspection may still be open.

Portfolio totals use current mine membership, including events before the current owner or operator's tenure.

CFR headings link to the current Title 30 index; they are not historical legal determinations.

OWNERSHIP

Operator and controller history

Current ownership comes from MSHA Mines. Historical start and end dates come from MSHA Controller and Operator History.

CURRENT HIERARCHYBuzzi S p A → River Cement Company dba Buzzi Unicem USA → Selma Plant Quarry & Mill
HISTORY RECORDS26 relationships
INTERVAL CHECKPASScontroller/operator overlap
—

Buzzi S p AcontrolsRiver Cement Company dba Buzzi Unicem USAoperatesSelma Plant Quarry & Mill

msha-controller-operator-history · controller/operator co-tenure derived on mine 2300188
—

Missouri Pacific CorpcontrolsRiver Cement CompanyoperatesSelma Plant Quarry & Mill

msha-controller-operator-history · controller/operator co-tenure derived on mine 2300188
Other historical summaries · source-specific periods

RECORD SUMMARY

Production, safety and enforcement

These summaries use the periods stated on each card, independently of the reporting period above.

01 / SAFETYwatch

Accidents and injuries

325 historical accident/injury rows; 0 coded fatalities and 8,856 lost days across the published record.

ACCIDENT + INJURY RECORD53 since 2021
accidentsmine-production-quarterly
02 / COMPLIANCEwatch

Violations and penalties

1,557 violation rows across the full record; 358 carry an S&S flag and $688,467 appears in current assessed amounts.

ENFORCEMENT ACTIVITY434 since 2021
inspectionsviolationsassessed-violationsorders-107a
03 / HEALTHwatch

Occupational health samples

386 personal. 22 personal-sample rows have a published C/E ratio above 1; 0 noise rows have an action-level or PEL dose above 100%. These are separate measures, not a silica exceedance count. Silica results and sample status are shown separately.

OCCUPATIONAL EXPOSURE386 samples
personal-health-samples
04 / PRODUCTIONcontext

Quarterly production and employment

83K employee hours and 161 summed average employees across reported subunits in the latest published quarter.

2026-Q20 tons
mine-production-quarterlymine-production-yearly
05 / LEGALwatch

Contests, conferences and decisions

445 contested-violation rows, 446 civil-penalty docket/decision rows, and 98 conference records linked by issuance number.

POST-ISSUANCE LIFECYCLE989 linked rows
conferencescontested-violationscivil-penalty-dockets-decisions
06 / CONTRACTORScontext

Contractors

Contractors are linked through this mine’s violation or accident records. Their production and hours cover all their operations, so they are not included in this mine’s totals.

ENTITY-LEVEL CONTEXT57 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations
07 / INSPECTIONScontext

Inspections

242 inspection events and 9K published inspection hours across the historical record.

OVERSIGHT COVERAGE78 since 2021
inspectionsviolations

HEALTH SAMPLING

Silica and quartz

Matching records20 coal · 2 personal · 0 area
Sample status0 not voided0 voided · 2 status not reported
Personal samples with C/E > 102 published ratios · not a citation count
2026 · Apr 15, 2026–Apr 15, 2026
Date / sampleDataset / analyteOccupation / areaMeasurementSample statusPublished action
000000202601571300Metal/nonmetal personalQuartz, respirable, >1% QtzCleanup Man0× published limitConcentration: 0000.21 · limit: 0000.00Source unit unspecifiedNot reportedNO ACTIONInspection F03860D
000000202601571500Metal/nonmetal personalQuartz, respirable, >1% QtzCleanup Man0.25× published limitConcentration: 0000.64 · limit: 0002.56Source unit unspecifiedNot reportedNO ACTIONInspection F03860D
Sources and interpretation
  • Coal means use numeric concentrations from samples marked not voided, excluding control/invalid sample types and dates after the snapshot. Missing values remain null; reported zeroes remain zero.
  • Quarterly means describe available samples, not mine-wide or worker-average exposure. Quarters with no eligible measurements remain empty; the current quarter is partial.
  • Personal C/E is MSHA's published concentration-to-limit ratio. A value above 1 is not by itself a citation or a determination under the 2024 silica rule. Personal and area files do not publish a void-status field.
  • Area records include bulk-dust analyses and are kept separate from personal exposure results. Their concentration units are not specified in the source dictionary.
  • Missing samples do not establish safe conditions. Coal quartz percentage and concentration are separate measures. No compliance threshold is inferred for coal samples.

Coal quartz field definitions ↗Metal/nonmetal personal field definitions ↗Metal/nonmetal area field definitions ↗

EIA + TITLE 30

EIA production and cited regulations

EIA annual figures are reported separately from MSHA. Regulation links use the current eCFR snapshot.

RECENT PUBLIC RECORDS

Recent violations and samples

Latest records retained for inspection; aggregates above use the full source history.

VIOLATIONS12 latest shown
504239156.12030Citation
504239056.20003(b)S&S
504238956.12030Citation
504238856.13011Citation
504238756.13011Citation
504238656.4201(a)(1)Citation
504238556.14100(b)Citation
504238447.41(a)Citation
OTHER HEALTH SAMPLES7 latest shown

Coal dust, noise and other contaminants. Silica records above ↑

Respirable dust, <.1mgMechanic
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgFront-end Loader Operator
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Unlisted Particulate, respirable, <1% QtzCleanup Man
C/E: 00.00Concentration: 0000.19 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgComplete Load-Haul-Dump
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgFront-end Loader Operator
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Nuisance dust, respirable, <1% QtzUtility Man
C/E: 01.84Concentration: 0018.40 · limit: 0010.00Source unit unspecified
Nuisance dust, respirable, <1% QtzCleanup Man
C/E: 00.19Concentration: 0001.90 · limit: 0010.00Source unit unspecified

SOURCE COVERAGE

Reporting dates and coverage

15 datasets contain linked records. Missing datasets are listed below.

DATASETROWSWINDOWSTATUS
Accident, Injuries, and Illnessessafety · contractors325Jan 11, 2000—Sep 15, 2026mine-keyed
Addresses of Recordidentity · logistics1Feb 15, 1973—Feb 15, 1973mine-keyed
Assessed Violationscompliance · legal1,521Mar 9, 2000—Jun 11, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal446Aug 25, 2004—Apr 28, 2026mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal98Sep 30, 2003—May 16, 2024mine-keyed
Contested Violationscompliance · legal445Mar 31, 2004—Nov 6, 2025mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety7,149Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety1,322Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance2Jan 1, 1950—Jul 15, 1979mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance318Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance81Not published—Not publishedmine-keyed
Inspectionssafety · compliance242Mar 9, 2000—Oct 1, 2026mine-keyed
Minesidentity · production · logistics1Not published—Not publishedmine-keyed
Metal and Nonmetal Area Sampleshealth · safety—No published rowsabsent / not applicable
Metal and Nonmetal Personal Health Sampleshealth · safety386Oct 18, 2001—Apr 15, 2026mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal1,557Mar 9, 2000—Oct 15, 2026mine-keyed
107(a) Orders Issuedsafety · compliance—No published rowsabsent / not applicable

NOTES

Limitations

  • Contractor production is entity-level and is never represented as mine-attributable.
  • Missing rows can mean no event, publication delay, identity mismatch, or inapplicability.