MINE DETAILS
Silica Services Mining, LLC
MSHA MINE ID0203270
LOCATION
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Silica Services Mining, LLC35.21639, -109.33361Open map ↗
Quarterly trends
2025 Q1 – 2026 Q4
Database snapshot · 2026-10-13. MSHA quarterly production and employment reports.
Coal production
0reported short tons
Hours worked
372,873reported employee hours
Tons per hour
0.00production ÷ hours worked
Missing values appear as —. Totals use available reports. Tons per hour requires production and hours for the same quarters and a nonzero hours total. * Striped bars mark partial mine coverage or an incomplete quarter. See the table for coverage.
Quarterly data and reporting coverage
| Quarter | Coal (short tons) | Hours worked | Tons / hour | Avg. employees | Coverage |
|---|---|---|---|---|---|
| 2025 Q1 | 0 | 53,815 | 0.00 | 102 | 1/1 mines reporting |
| 2025 Q2 | 0 | 59,146 | 0.00 | 110 | 1/1 mines reporting |
| 2025 Q3 | 0 | 68,754 | 0.00 | 115 | 1/1 mines reporting |
| 2025 Q4 | 0 | 63,075 | 0.00 | 117 | 1/1 mines reporting |
| 2026 Q1 | 0 | 58,831 | 0.00 | 103 | 1/1 mines reporting |
| 2026 Q2 | 0 | 69,252 | 0.00 | 124 | 1/1 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-13
Violations
50 significant & substantial (S&S)
Accident records
90 records classified as fatality
Proposed penalties · USD
755.005 of 5 violations with amounts
On-site inspection hours
36.004 inspections · 4 with hours
Counts are published records, including contractor records. * The quarter was incomplete at the snapshot date; recent counts may rise as reports arrive. — means no reported amount or hours. Portfolio totals use current membership.
Quarterly safety data
| Quarter | Violations | S&S | Proposed USD | Accident records | Fatality records | Inspections | On-site hours |
|---|---|---|---|---|---|---|---|
| 2025-Q1 | 0 | 0 | — | 2 | 0 | 0 | — |
| 2025-Q2 | 0 | 0 | — | 0 | 0 | 1 | 8.0 |
| 2025-Q3 | 0 | 0 | — | 1 | 0 | 0 | — |
| 2025-Q4 | 3 | 0 | 453.00 | 3 | 0 | 2 | 11.0 |
| 2026-Q1 | 0 | 0 | — | 2 | 0 | 0 | — |
| 2026-Q2 | 2 | 0 | 302.00 | 0 | 0 | 1 | 17.0 |
| 2026-Q3 | 0 | 0 | — | 1 | 0 | 0 | — |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
DISORDERS (PHYSICAL AGENTS) · OCCUPATNAL ILLNESS NOT DEG 1-6
Accident narrative
Employee called EE's supervisor over to EE's location for assistance, upon supervisor arriving employee walked towards EE and collapsed onto EE and lost consciousness briefly.
Regular Safety and Health Inspection · 17.0 on-site hours
56.12008 · $151.00 proposed
56.4201(a)(2) · $151.00 proposed
HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY
Accident narrative
Employee was shoveling sand when they bent down to get more sand with shovel, they twisted their back and continued until it worsened.
SLIP OR FALL OF PERSON · DAYS AWAY FROM WORK ONLY
Accident narrative
Employee was performing housekeeping duties to mitigate slip hazards of ice and ended up slipping on that ice, resulting in a fall on their left knee. Employee refused medical treatment and continued work the remainder of the day. Employee woke the next morning with a swollen knee.
HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY
Accident narrative
Employee was removing a motor and agitator from flocculant machine, when lifting it out it started to slip forward and employee tried to catch it, upon doing so the guard caught the palm of EE's hand cutting it, requiring 5 stiches. Employee was not wearing gloves.
HANDTOOLS (NONPOWERED) · DAYS AWAY FROM WORK ONLY
Accident narrative
Employee was installing a door on an elevated building, they used a dead blow hammer to help knock door frame in place, when they hit the door frame the door bounced back and upon trying to catch the door they fell backwards and sprained right ankle when catching.
56.20003(b) · $151.00 proposed
56.12008 · $151.00 proposed
Regular Safety and Health Inspection · 11.0 on-site hours
Spot Inspection · 0.0 on-site hours
50.20(a) · $151.00 proposed
HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY
Accident narrative
Employee was utilizing a shovel to clean around plant when they strained their back.
HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY
Accident narrative
After completion of maintenance work on an elevated area, the employee was lowering a tool bucket down with a rope, the tail end of the rope became entangled in a shaft pulling the rope tight and cutting employees right ring finger.
Regular Safety and Health Inspection · 8.0 on-site hours
SLIP OR FALL OF PERSON · DAYS AWAY FROM WORK ONLY
Accident narrative
Employee was walking over scrap metal in laydown when EE lost footing and when EE landed on right foot EE felt a pain in the bottom of foot.
SLIP OR FALL OF PERSON · DAYS AWAY FROM WORK ONLY
Accident narrative
Employee was cleaning around plant when they slipped on ice and pulled a leg muscle.
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.
—
Mike O'Neill et alcontrolsSilica Services Mining, LLCoperatesSilica Services Mining, LLC
msha-controller-operator-history · controller/operator co-tenure derived on mine 0203270—
Silica Services Holdings, LLCcontrolsPreferred Sands Of Arizona LLCoperatesSilica Services Mining, LLC
msha-controller-operator-history · controller/operator co-tenure derived on mine 0203270—
Silica Services Holdings, LLCcontrolsSilica Services Mining, LLCoperatesSilica Services Mining, LLC
msha-controller-operator-history · controller/operator co-tenure derived on mine 0203270—
Preferred Intermediate Holding Company, LLCcontrolsPreferred Proppants, LLCoperatesSilica Services Mining, LLC
msha-controller-operator-history · controller/operator co-tenure derived on mine 0203270—
Mike O'Neill et alcontrolsPreferred Sands Of Arizona LLCoperatesSilica Services Mining, LLC
msha-controller-operator-history · controller/operator co-tenure derived on mine 0203270Other 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
51 historical accident/injury rows; 0 coded fatalities and 392 lost days across the published record.
ACCIDENT + INJURY RECORD27 since 2021
accidentsmine-production-quarterly02 / COMPLIANCEwatch
Violations and penalties
219 violation rows across the full record; 66 carry an S&S flag and $131,583 appears in current assessed amounts.
ENFORCEMENT ACTIVITY47 since 2021
inspectionsviolationsassessed-violationsorders-107a03 / HEALTHcontext
Occupational health samples
31 personal. 0 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 EXPOSURE31 samples
personal-health-samples04 / PRODUCTIONcontext
Quarterly production and employment
69K employee hours and 124 summed average employees across reported subunits in the latest published quarter.
2026-Q20 tons
mine-production-quarterlymine-production-yearly05 / LEGALwatch
Contests, conferences and decisions
38 contested-violation rows, 38 civil-penalty docket/decision rows, and 12 conference records linked by issuance number.
POST-ISSUANCE LIFECYCLE88 linked rows
conferencescontested-violationscivil-penalty-dockets-decisions06 / 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 CONTEXT7 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations07 / INSPECTIONScontext
Inspections
63 inspection events and 1K published inspection hours across the historical record.
OVERSIGHT COVERAGE18 since 2021
inspectionsviolationsHEALTH SAMPLING
Silica and quartz
Coal quartz, metal/nonmetal personal samples and area samples. Snapshot Oct 13, 2026. 14 silica records across the mine’s published history.
Personal silica samples · concentration / limit
Quarterly mean · published C/E ratio
— No eligible measurements. * Quarter in progress. Means describe the available samples, not average exposure across the mine.
Quartz % is the sample’s quartz content; µg/m³ is its reported concentration. Personal C/E is the ratio to the limit published with that sample. Personal and area concentration units and void status are not specified in those source files.
| Date / sample | Dataset / analyte | Occupation / area | Measurement | Sample status | Published action |
|---|---|---|---|---|---|
| No silica records match these filters. Missing samples do not establish safe conditions. | |||||
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.
Not present in the 2024 EIA coal workbook.
This can mean the operation is non-coal, inactive for the annual period, or outside the EIA-7A reporting population.
30 CFR 56.12008Insulation and fittings for power wires and cables.2 recent rows ↗30 CFR 56.4201Inspection.2 recent rows ↗30 CFR 56.20003Housekeeping.3 recent rows ↗30 CFR 50.20Preparation and submission of MSHA Report Form 7000-1—Mine Accident, Injury, and Illness Report.2 recent rows ↗30 CFR 56.4101Warning signs.1 recent row ↗30 CFR 56.4402Safety can use.1 recent row ↗30 CFR 56.4104Combustible waste.1 recent row ↗
RECENT PUBLIC RECORDS
Recent violations and samples
Latest records retained for inspection; aggregates above use the full source history.
973504756.12008Citation
973497156.4201(a)(2)Citation
505901556.20003(b)Citation
505901456.12008Citation
505974650.20(a)Citation
982870750.20(a)Citation
990950456.20003(a)Citation
990429156.4101Citation
Coal dust, noise and other contaminants. Silica records above ↑
Respirable dust, <.1mgTruck Driver
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgDry Screen Plant Operator
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgTruck Driver
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgShovel Operator
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgUtility Man
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgUtility Man
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, <.1mgTruck Driver
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
SOURCE COVERAGE
Reporting dates and coverage
15 datasets contain linked records. Missing datasets are listed below.
DATASETROWSWINDOWSTATUS
Accident, Injuries, and Illnessessafety · contractors51Aug 13, 2011—Aug 25, 2026mine-keyed
Addresses of Recordidentity · logistics1Mar 1, 2022—Mar 1, 2022mine-keyed
Assessed Violationscompliance · legal219Mar 2, 2011—Apr 19, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal38Feb 25, 2013—Jul 26, 2023mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal12Jan 17, 2012—Jun 1, 2017mine-keyed
Contested Violationscompliance · legal38Dec 20, 2011—Jul 19, 2022mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety1,355Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety175Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance5Jan 14, 2011—Oct 25, 2019mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance174Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance42Not published—Not publishedmine-keyed
Inspectionssafety · compliance63Mar 2, 2011—Apr 19, 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 · safety31Mar 2, 2011—Nov 4, 2025mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal219Mar 2, 2011—Apr 19, 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.