MSHA DATABASEMSHA records · 13 contributing sources · snapshot Oct 13, 2026

MINE DETAILS

SILICA PLANT

ActiveSurfaceConstruction Sand and Gravel
MSHA MINE ID0800307
LOCATIONPolk, FL
PUBLIC RECORD834 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 – 2026-10-13Applies to production, safety and portfolio metrics. Silica samples have separate filters.

Violations

16

5 significant & substantial (S&S)

  1. 2025 Q14
  2. 2025 Q24
  3. 2025 Q30
  4. 2025 Q40
  5. 2026 Q18
  6. 2026 Q20
  7. 2026 Q30
  8. 2026 Q4 *0

Accident records

2

0 records classified as fatality

  1. 2025 Q10
  2. 2025 Q20
  3. 2025 Q30
  4. 2025 Q40
  5. 2026 Q11
  6. 2026 Q21
  7. 2026 Q30
  8. 2026 Q4 *0

Proposed penalties · USD

23,792.00

16 of 16 violations with amounts

  1. 2025 Q115,387
  2. 2025 Q23,290
  3. 2025 Q3—
  4. 2025 Q4—
  5. 2026 Q15,115
  6. 2026 Q2—
  7. 2026 Q3—
  8. 2026 Q4 *—

On-site inspection hours

64.00

7 inspections · 7 with hours

  1. 2025 Q126.50
  2. 2025 Q210.00
  3. 2025 Q310.00
  4. 2025 Q4—
  5. 2026 Q116.50
  6. 2026 Q21.00
  7. 2026 Q30.00
  8. 2026 Q4 *—
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q14215,387.0000226.5
2025-Q2413,290.0000110.0
2025-Q300—00110.0
2025-Q400—000—
2026-Q1825,115.0010116.5
2026-Q200—1011.0
2026-Q300—0010.0
2026-Q4 *00—000—

Most cited CFR sections

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

Safety activity

  1. inspectionF04B40F

    Regular Safety and Health Inspection · 0.0 on-site hours

  2. accident220261520025

    OTHER · INJURIES DUE TO NATURAL CAUSES

    Accident narrative

    Employee went to the main office complaining of head ache. EE took some aspirin. Ate some pizza rolls and sat down to rest. Office manager noticed a sound coming from the employee and noticed that EE was unresponsive.

  3. inspectionF02DA61

    Spot Inspection · 1.0 on-site hours

  4. accident220260890051

    HANDLING OF MATERIALS · NO DYS AWY FRM WRK,NO RSTR ACT

    Accident narrative

    Employee was working to get EE's hammer from the welding truck. While holding the tool box open the hammer slipped from EE's other hand and hit EE's left middle finger.

  5. inspection6913262

    Regular Safety and Health Inspection · 16.5 on-site hours

  6. violation5063584

    56.14206(b) · $398.00 proposed

  7. violation5063583

    56.14112(b) · $151.00 proposed

  8. violation5063582

    56.14112(b) · $151.00 proposed

  9. violation5063581

    56.14107(a) · $177.00 proposed

  10. violation5063580

    56.14112(b) · $151.00 proposed

  11. violation5063579

    56.14107(a) · S&S · $1,968.00 proposed

  12. violation5063578

    56.12004 · $151.00 proposed

  13. violation5063577

    56.14107(a) · S&S · $1,968.00 proposed

  14. inspectionF01C8CB

    Spot Inspection · 10.0 on-site hours

  15. violation9820383

    56.14112(b) · S&S · $1,818.00 proposed

  16. violation9820382

    56.12030 · $818.00 proposed

  17. violation9820381

    56.14100(b) · $366.00 proposed

  18. inspectionF01ECEB

    Regular Safety and Health Inspection · 10.0 on-site hours

  19. violation9821910

    56.5001(a)/.5005 · $288.00 proposed

  20. inspection6976485

    Spot Inspection · 9.5 on-site hours

  21. inspectionF016CFB

    Regular Safety and Health Inspection · 17.0 on-site hours

  22. violation9825466

    56.18010 · $366.00 proposed

  23. violation9825465

    56.20003(a) · S&S · $1,219.00 proposed

  24. violation9820359

    56.14107(b) · $366.00 proposed

  25. violation9820358

    56.12032 · S&S · $13,436.00 proposed

Safety sources and definitions

MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-13.

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 HIERARCHYValerie Carnes → Standard Sand & Silica Company → SILICA PLANT
HISTORY RECORDS25 relationships
INTERVAL CHECKPASScontroller/operator overlap
—

Valerie CarnescontrolsStandard Sand & Silica CompanyoperatesSILICA PLANT

msha-controller-operator-history · controller/operator co-tenure derived on mine 0800307
—

Lemuel Baylis Carnes IIIcontrolsStandard Sand & Silica CompanyoperatesSILICA PLANT

msha-controller-operator-history · controller/operator co-tenure derived on mine 0800307
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

13 historical accident/injury rows; 0 coded fatalities and 303 lost days across the published record.

ACCIDENT + INJURY RECORD5 since 2021
accidentsmine-production-quarterly
02 / COMPLIANCEwatch

Violations and penalties

195 violation rows across the full record; 67 carry an S&S flag and $69,611 appears in current assessed amounts.

ENFORCEMENT ACTIVITY55 since 2021
inspectionsviolationsassessed-violationsorders-107a
03 / HEALTHwatch

Occupational health samples

62 personal. 5 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 EXPOSURE62 samples
personal-health-samples
04 / PRODUCTIONcontext

Quarterly production and employment

5K employee hours and 9 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

14 contested-violation rows, 14 civil-penalty docket/decision rows, and 7 conference records linked by issuance number.

POST-ISSUANCE LIFECYCLE35 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 CONTEXT0 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations
07 / INSPECTIONScontext

Inspections

99 inspection events and 1K published inspection hours across the historical record.

OVERSIGHT COVERAGE23 since 2021
inspectionsviolations

HEALTH SAMPLING

Silica and quartz

Matching records10 coal · 1 personal · 0 area
Sample status0 not voided0 voided · 1 status not reported
Personal samples with C/E > 101 published ratios · not a citation count
2026 · Feb 18, 2026–Feb 18, 2026
Date / sampleDataset / analyteOccupation / areaMeasurementSample statusPublished action
000000202600629800Metal/nonmetal personalQuartz, respirable, >1% QtzBagging Operator0.47× published limitConcentration: 0000.20 · limit: 0000.43Source unit unspecifiedNot reportedNO ACTIONInspection 6913262
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
506358456.14206(b)Citation
506358356.14112(b)Citation
506358256.14112(b)Citation
506358156.14107(a)Citation
506358056.14112(b)Citation
506357956.14107(a)S&S
506357856.12004Citation
506357756.14107(a)S&S
OTHER HEALTH SAMPLES8 latest shown

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

Respirable dust, <.1mgBuilding Repair/Maint.
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgForklift Operator
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
Respirable dust, <.1mgForklift Operator
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Unlisted Particulate, respirable, <1% QtzKiln/Dryer Operator
C/E: 00.00Concentration: 0000.13 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgPackaging Operations Worker
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgForklift Operator
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgPelletizer Operator
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified

SOURCE COVERAGE

Reporting dates and coverage

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

DATASETROWSWINDOWSTATUS
Accident, Injuries, and Illnessessafety · contractors13May 17, 2000—May 22, 2026mine-keyed
Addresses of Recordidentity · logistics1Nov 1, 2005—Nov 1, 2005mine-keyed
Assessed Violationscompliance · legal191Apr 19, 2000—Feb 17, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal14Apr 18, 2011—Feb 25, 2025mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal7Mar 4, 2004—Oct 10, 2007mine-keyed
Contested Violationscompliance · legal14Sep 21, 2010—Jun 21, 2022mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety—No published rowsabsent / not applicable
Contractor Employment and Production — Yearlycontractors · production · safety—No published rowsabsent / not applicable
Controller and Operator Historyidentity · compliance2Jan 1, 1950—Jan 1, 1950mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance198Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance37Not published—Not publishedmine-keyed
Inspectionssafety · compliance99Apr 18, 2000—Aug 25, 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 · safety62Sep 19, 2001—Feb 18, 2026mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal195Apr 19, 2000—Feb 17, 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.