MINE DETAILS
Atascosa
MSHA MINE ID4105317
LOCATION
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Atascosa29.15194, -98.59028Open 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
401,864reported 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 | 62,395 | 0.00 | 112 | 1/1 mines reporting |
| 2025 Q2 | 0 | 65,839 | 0.00 | 111 | 1/1 mines reporting |
| 2025 Q3 | 0 | 68,257 | 0.00 | 119 | 1/1 mines reporting |
| 2025 Q4 | 0 | 64,772 | 0.00 | 111 | 1/1 mines reporting |
| 2026 Q1 | 0 | 69,792 | 0.00 | 115 | 1/1 mines reporting |
| 2026 Q2 | 0 | 70,809 | 0.00 | 112 | 1/1 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-13
Violations
8317 significant & substantial (S&S)
Accident records
41 records classified as fatality
Proposed penalties · USD
391,338.0065 of 83 violations with amounts
On-site inspection hours
353.5014 inspections · 14 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 | 8 | 2 | 2,237.00 | 0 | 0 | 2 | 34.3 |
| 2025-Q2 | 7 | 0 | 906.00 | 1 | 1 | 5 | 183.3 |
| 2025-Q3 | 4 | 1 | 864.00 | 1 | 0 | 1 | 33.0 |
| 2025-Q4 | 0 | 0 | — | 0 | 0 | 0 | — |
| 2026-Q1 | 47 | 10 | 387,331.00 | 0 | 0 | 1 | 72.8 |
| 2026-Q2 | 1 | 0 | — | 0 | 0 | 3 | 5.0 |
| 2026-Q3 | 16 | 4 | — | 2 | 0 | 2 | 25.3 |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
56.14109 · S&S
56.14207
56.14132(b)(2) · S&S
56.20003(a)
56.20003(a) · S&S
56.12008
56.12032
103 (g) Written Notification Hazard Complaint Inspectio · 0.0 on-site hours
56.12008
56.15007
47.41(a)
56.4402
56.14100(a)
56.4201(a)(2)
56.4201(a)(2)
56.12047
56.14100(b) · S&S
Regular Safety and Health Inspection · 25.3 on-site hours
POWERED HAULAGE · DAYS AWAY FROM WORK ONLY
Accident narrative
A articulated haul truck was dumping a load of fill material when the bed the chain connectors for the bed tailgate snapped off leaving the gate closed. The operator was unaware that the load was not dumping and continued to raise the bed. This caused the weight of the load to shift onto the back of the truck resulting in the cab lifting up and rolling onto its passenger side.
HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY
Accident narrative
A mechanic was tasked with replacing digging teeth on an excavator. When the mechanic was picking up one of the teeth it slipped and caught EE's left small finger causing a fracture. The mechanic continued to work. While using a soft face sledge hammer to remove a tooth a shard of metal became airborne and struck the mechanic in the groin causing a laceration.
Spot Inspection · 1.0 on-site hours
Verbal Hazard Complaint Inspections · 2.3 on-site hours
Verbal Hazard Complaint Inspections · 1.8 on-site hours
56.20010
46.9(b)(2) · $151.00 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.
—
Iron Oak Energy Solutions LLCcontrolsIron Oak Atascosa LLCoperatesAtascosa
msha-controller-operator-history · controller/operator co-tenure derived on mine 4105317—
Orchard Global Asset Management LLPcontrolsIron Oak Atascosa LLCoperatesAtascosa
msha-controller-operator-history · controller/operator co-tenure derived on mine 4105317—
Mike O'Neill et alcontrolsIron Oak Atascosa LLCoperatesAtascosa
msha-controller-operator-history · controller/operator co-tenure derived on mine 4105317Other 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
32 historical accident/injury rows; 2 coded fatalities and 693 lost days across the published record.
ACCIDENT + INJURY RECORD19 since 2021
accidentsmine-production-quarterly02 / COMPLIANCEwatch
Violations and penalties
203 violation rows across the full record; 44 carry an S&S flag and $614,212 appears in current assessed amounts.
ENFORCEMENT ACTIVITY145 since 2021
inspectionsviolationsassessed-violationsorders-107a03 / HEALTHwatch
Occupational health samples
18 personal. 4 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 EXPOSURE18 samples
personal-health-samples04 / PRODUCTIONcontext
Quarterly production and employment
71K employee hours and 112 summed average employees across reported subunits in the latest published quarter.
2026-Q20 tons
mine-production-quarterlymine-production-yearly05 / LEGALwatch
Contests, conferences and decisions
9 contested-violation rows, 7 civil-penalty docket/decision rows, and 2 conference records linked by issuance number.
POST-ISSUANCE LIFECYCLE18 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 CONTEXT8 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations07 / INSPECTIONScontext
Inspections
57 inspection events and 2K published inspection hours across the historical record.
OVERSIGHT COVERAGE34 since 2021
inspectionsviolationsHEALTH SAMPLING
Silica and quartz
Coal quartz, metal/nonmetal personal samples and area samples. Snapshot Oct 13, 2026. 9 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 |
|---|---|---|---|---|---|
| 000000202601241900 | Metal/nonmetal personalQuartz, respirable, >1% Qtz | Utility Man | 0.92× published limitConcentration: 0000.36 · limit: 0000.39Source unit unspecified | Not reported | NO ACTIONInspection F02FE4B |
| 000000202601242100 | Metal/nonmetal personalQuartz, respirable, >1% Qtz | Utility Man | 1.19× published limitConcentration: 0000.63 · limit: 0000.53Source unit unspecified | Not reported | NO ACTIONInspection F02FE4B |
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 56.14109Unguarded conveyors with adjacent travelways.1 recent row ↗30 CFR 56.14207Parking procedures for unattended equipment.1 recent row ↗30 CFR 56.14132Horns and backup alarms.1 recent row ↗30 CFR 56.20003Housekeeping.2 recent rows ↗30 CFR 56.12008Insulation and fittings for power wires and cables.2 recent rows ↗30 CFR 56.12032Inspection and cover plates.1 recent row ↗30 CFR 56.15007Protective equipment or clothing for welding, cutting, or working with molten metal.1 recent row ↗30 CFR 47.41Requirement for container labels.1 recent row ↗
RECENT PUBLIC RECORDS
Recent violations and samples
Latest records retained for inspection; aggregates above use the full source history.
517034456.14109S&S
974830356.14207Citation
974830256.14132(b)(2)S&S
517034256.20003(a)Citation
517034156.20003(a)S&S
974830156.12008Citation
517034356.12032Citation
974830056.12008Citation
Coal dust, noise and other contaminants. Silica records above ↑
Respirable dust, <.1mgFront-end Loader Operator
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Unlisted Particulate, respirable, <1% QtzSupervisor, Co. Official
C/E: 00.00Concentration: 0004.94 · limit: 0000.00Source unit unspecified
Unlisted Particulate, respirable, <1% QtzUtility Man
C/E: 00.00Concentration: 0000.27 · limit: 0000.00Source unit unspecified
Unlisted Particulate, respirable, <1% QtzSupervisor, Co. Official
C/E: 00.00Concentration: 0000.16 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgSupervisor, Co. Official
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
SOURCE COVERAGE
Reporting dates and coverage
15 datasets contain linked records. Missing datasets are listed below.
DATASETROWSWINDOWSTATUS
Accident, Injuries, and Illnessessafety · contractors32Feb 10, 2018—Sep 11, 2026mine-keyed
Addresses of Recordidentity · logistics1Apr 2, 2018—Apr 2, 2018mine-keyed
Assessed Violationscompliance · legal181Apr 19, 2018—Mar 24, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal7Oct 12, 2021—Oct 12, 2021mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal2Jan 9, 2026—Jan 9, 2026mine-keyed
Contested Violationscompliance · legal9Aug 26, 2020—Mar 27, 2026mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety1,818Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety431Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance3Jan 23, 2018—Jan 23, 2018mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance72Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance20Not published—Not publishedmine-keyed
Inspectionssafety · compliance57Jan 8, 2018—Sep 15, 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 · safety18Apr 25, 2018—Mar 24, 2026mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal203Apr 19, 2018—Sep 21, 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.