MINE DETAILS
Tata Chemicals Mine
MSHA MINE ID4800155
LOCATION
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Tata Chemicals Mine41.59139, -109.75500Open 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
1,731,135reported 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 | 285,927 | 0.00 | 559 | 1/1 mines reporting |
| 2025 Q2 | 0 | 295,510 | 0.00 | 560 | 1/1 mines reporting |
| 2025 Q3 | 0 | 288,414 | 0.00 | 551 | 1/1 mines reporting |
| 2025 Q4 | 0 | 303,903 | 0.00 | 544 | 1/1 mines reporting |
| 2026 Q1 | 0 | 275,342 | 0.00 | 538 | 1/1 mines reporting |
| 2026 Q2 | 0 | 282,039 | 0.00 | 537 | 1/1 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-13
Violations
28029 significant & substantial (S&S)
Accident records
111 records classified as fatality
Proposed penalties · USD
86,026.00204 of 280 violations with amounts
On-site inspection hours
2,231.50126 inspections · 126 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 | 54 | 6 | 19,651.00 | 2 | 0 | 24 | 303.8 |
| 2025-Q2 | 43 | 2 | 14,379.00 | 4 | 0 | 20 | 275.0 |
| 2025-Q3 | 15 | 0 | 20,380.00 | 0 | 0 | 16 | 263.3 |
| 2025-Q4 | 33 | 7 | 11,414.00 | 0 | 0 | 13 | 363.5 |
| 2026-Q1 | 34 | 5 | 11,238.00 | 1 | 0 | 19 | 340.3 |
| 2026-Q2 | 28 | 4 | 8,662.00 | 3 | 0 | 16 | 324.3 |
| 2026-Q3 | 68 | 5 | 302.00 | 1 | 1 | 16 | 345.5 |
| 2026-Q4 * | 5 | 0 | — | 0 | 0 | 2 | 16.0 |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
57.4201(a)(2)
103(i) Spot Inspections · 0.0 on-site hours
57.4201(a)(2)
57.12032
57.14207
57.4201(a)(1)
Regular Safety and Health Inspection · 16.0 on-site hours
103(i) Spot Inspections · 4.5 on-site hours
103(i) Spot Inspections · 6.0 on-site hours
57.4201(b)
56.12008
47.41(a)
57.12032
56.12002
57.4402
57.12018
57.12028
57.11003
57.12032
47.41(a)
57.20003(a)
57.12004
57.12028
47.41(a)(1)
57.20003(b) · S&S
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.
—
Tata Chemicals LtdcontrolsTata Chemicals Soda Ash Partners LLCoperatesTata Chemicals Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4800155—
General Chemical et alcontrolsTata Chemicals Soda Ash Partners LLCoperatesTata Chemicals Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4800155—
Andover Group et alcontrolsTata Chemicals Soda Ash Partners LLCoperatesTata Chemicals Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4800155—
Allied-Signal InccontrolsGeneral Chemical CorpoperatesTata Chemicals Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 4800155Other 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
671 historical accident/injury rows; 1 coded fatalities and 11,074 lost days across the published record.
ACCIDENT + INJURY RECORD74 since 2021
accidentsmine-production-quarterly02 / COMPLIANCEwatch
Violations and penalties
2,522 violation rows across the full record; 379 carry an S&S flag and $1,131,486 appears in current assessed amounts.
ENFORCEMENT ACTIVITY877 since 2021
inspectionsviolationsassessed-violationsorders-107a03 / HEALTHwatch
Occupational health samples
254 personal; 4 area. 25 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 EXPOSURE258 samples
personal-health-samplesarea-samples04 / PRODUCTIONcontext
Quarterly production and employment
282K employee hours and 537 summed average employees across reported subunits in the latest published quarter.
2026-Q20 tons
mine-production-quarterlymine-production-yearly05 / LEGALwatch
Contests, conferences and decisions
409 contested-violation rows, 403 civil-penalty docket/decision rows, and 52 conference records linked by issuance number.
POST-ISSUANCE LIFECYCLE864 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 CONTEXT40 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations07 / INSPECTIONScontext
Inspections
2,041 inspection events and 32K published inspection hours across the historical record.
OVERSIGHT COVERAGE473 since 2021
inspectionsviolationsHEALTH SAMPLING
Silica and quartz
Coal quartz, metal/nonmetal personal samples and area samples. Snapshot Oct 13, 2026. 114 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 |
|---|---|---|---|---|---|
| 000000202603593400 | Metal/nonmetal personalQuartz, respirable, >1% Qtz | Roof Bolter, Rock | 0.36× published limitConcentration: 0000.79 · limit: 0002.17Source unit unspecified | Not reported | NO ACTIONInspection F014CFD |
| 000000202603593700 | Metal/nonmetal personalQuartz, respirable, >1% Qtz | Shuttle Car Operator (diesel) | 0.36× published limitConcentration: 0001.00 · limit: 0002.78Source unit unspecified | Not reported | NO ACTIONInspection F014CFD |
| 000000202603593500 | Metal/nonmetal personalQuartz, respirable, >1% Qtz | Shuttle Car Operator (diesel) | 0.33× published limitConcentration: 0000.80 · limit: 0002.44Source unit unspecified | Not reported | NO ACTIONInspection F014CFD |
| 000000202603593600 | Metal/nonmetal personalQuartz, respirable, >1% Qtz | Cont. Miner Operator | 0.99× published limitConcentration: 0002.67 · limit: 0002.70Source unit unspecified | Not reported | NO ACTIONInspection F014CFD |
| 000000202603593800 | Metal/nonmetal personalQuartz, respirable, >1% Qtz | Supervisor, Co. Official | 0.29× published limitConcentration: 0000.76 · limit: 0002.63Source unit unspecified | Not reported | NO ACTIONInspection F014CFD |
| 000000202600119500 | Metal/nonmetal personalQuartz, respirable, >1% Qtz | Supervisor, Co. Official | 0.73× published limitConcentration: 0001.98 · limit: 0002.70Source unit unspecified | Not reported | NO ACTIONInspection F02FE82 |
| 000000202600119600 | Metal/nonmetal personalQuartz, respirable, >1% Qtz | Cont. Miner Operator | 1.04× published limitConcentration: 0002.81 · limit: 0002.70Source unit unspecified | Not reported | LAB RESULTS INDICATE EXPOSURE LIMIT EXCEEDEDInspection F02FE82 |
| 000000202600119700 | Metal/nonmetal personalQuartz, respirable, >1% Qtz | Roof Bolter, Rock | 0.86× published limitConcentration: 0002.09 · limit: 0002.44Source unit unspecified | Not reported | NO ACTIONInspection F02FE82 |
| 000000202600119800 | Metal/nonmetal personalQuartz, respirable, >1% Qtz | Shuttle Car Operator (diesel) | 0.72× published limitConcentration: 0002.01 · limit: 0002.78Source unit unspecified | Not reported | NO ACTIONInspection F02FE82 |
| 000000202600031700 | Metal/nonmetal personalQuartz, respirable, >1% Qtz | Belt Cleaner | 4.4× published limitConcentration: 0008.31 · limit: 0001.89Source unit unspecified | Not reported | LAB RESULTS INDICATE EXPOSURE LIMIT EXCEEDEDInspection F019AE2 |
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 57.4201Inspection.4 recent rows ↗30 CFR 57.12032Inspection and cover plates.2 recent rows ↗30 CFR 57.14207Parking procedures for unattended equipment.1 recent row ↗30 CFR 56.12008Insulation and fittings for power wires and cables.1 recent row ↗30 CFR 47.41Requirement for container labels.1 recent row ↗30 CFR 56.12002Controls and switches.1 recent row ↗30 CFR 57.4402Safety can use.1 recent row ↗30 CFR 57.12018Identification of power switches.1 recent row ↗
RECENT PUBLIC RECORDS
Recent violations and samples
Latest records retained for inspection; aggregates above use the full source history.
521352157.4201(a)(2)Citation
521352057.4201(a)(2)Citation
521351957.12032Citation
521351857.14207Citation
521351757.4201(a)(1)Citation
516067057.4201(b)Citation
516066956.12008Citation
516076247.41(a)Citation
Coal dust, noise and other contaminants. Silica records above ↑
Nuisance dust, respirable, <1% QtzLaborer, Bullgang
C/E: 00.04Concentration: 0000.44 · limit: 0010.00Source unit unspecified
Unlisted Particulate, respirable, <1% QtzLaborer, Bullgang
C/E: 00.00Concentration: 0000.31 · limit: 0000.00Source unit unspecified
Unlisted Particulate, respirable, <1% QtzBelt Cleaner
C/E: 00.00Concentration: 0002.71 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgBackhoe 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
Unlisted Particulate, respirable, <1% QtzTruck Driver
C/E: 00.00Concentration: 0000.13 · limit: 0000.00Source unit unspecified
SOURCE COVERAGE
Reporting dates and coverage
16 datasets contain linked records. Missing datasets are listed below.
DATASETROWSWINDOWSTATUS
Accident, Injuries, and Illnessessafety · contractors671Jan 20, 2000—Jul 29, 2026mine-keyed
Addresses of Recordidentity · logistics1Feb 18, 1982—Feb 18, 1982mine-keyed
Assessed Violationscompliance · legal2,425Mar 9, 2000—Aug 21, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal403Jan 28, 2010—Sep 17, 2026mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal52Aug 31, 2000—Apr 17, 2026mine-keyed
Contested Violationscompliance · legal409Sep 9, 2008—May 27, 2026mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety5,684Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety1,202Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance4Jan 1, 1950—Jul 1, 1989mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance395Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance81Not published—Not publishedmine-keyed
Inspectionssafety · compliance2,041Jan 3, 2000—Oct 7, 2026mine-keyed
Minesidentity · production · logistics1Not published—Not publishedmine-keyed
Metal and Nonmetal Area Sampleshealth · safety4Nov 25, 2014—Dec 17, 2025mine-keyed
Metal and Nonmetal Personal Health Sampleshealth · safety254Mar 21, 2001—Sep 1, 2026mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal2,522Mar 9, 2000—Oct 8, 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.