MINE DETAILS
Granite Creek Mine
MSHA MINE ID2601597
LOCATION
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Granite Creek Mine41.13639, -117.27583Open 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
64,563reported 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 | 7,161 | 0.00 | 25 | 1/1 mines reporting |
| 2025 Q2 | 0 | 8,871 | 0.00 | 25 | 1/1 mines reporting |
| 2025 Q3 | 0 | 20,316 | 0.00 | 25 | 1/1 mines reporting |
| 2025 Q4 | 0 | 8,358 | 0.00 | 25 | 1/1 mines reporting |
| 2026 Q1 | 0 | 9,018 | 0.00 | 25 | 1/1 mines reporting |
| 2026 Q2 | 0 | 10,839 | 0.00 | 30 | 1/1 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-13
Violations
650 significant & substantial (S&S)
Accident records
50 records classified as fatality
Proposed penalties · USD
105,687.0063 of 65 violations with amounts
On-site inspection hours
174.7516 inspections · 16 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 | 13 | 0 | 36,414.00 | 0 | 0 | 1 | 15.5 |
| 2025-Q2 | 10 | 0 | 13,603.00 | 1 | 0 | 1 | 19.0 |
| 2025-Q3 | 5 | 0 | 3,481.00 | 1 | 0 | 2 | 25.5 |
| 2025-Q4 | 13 | 0 | 5,799.00 | 0 | 0 | 2 | 25.3 |
| 2026-Q1 | 7 | 0 | 13,686.00 | 0 | 0 | 3 | 19.0 |
| 2026-Q2 | 12 | 0 | 29,452.00 | 2 | 0 | 3 | 46.5 |
| 2026-Q3 | 5 | 0 | 3,252.00 | 1 | 0 | 4 | 24.0 |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
Special Emphasis Programs · 0.0 on-site hours
103 (g) Written Notification Hazard Complaint Inspectio · 7.5 on-site hours
Compliance Follow-up Inspection · 3.5 on-site hours
FALL OF ROOF OR BACK · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
IE was spooning out lifter holes at the face when they were struck in the lower left back by a piece of unconsolidated material.
47.44(b) · $151.00 proposed
57.14100(b) · $1,320.00 proposed
57.20011 · $151.00 proposed
57.3360 · $1,126.00 proposed
57.9313 · $504.00 proposed
Regular Safety and Health Inspection · 13.0 on-site hours
HANDLING OF MATERIALS · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
While cleaning the cement mix tank, the injured employee attempted to clear a plugged drain hole by reaching into the cement mixture. During the process, the employee was exposed to wet cement, resulting in chemical burns.
Compliance Follow-up Inspection · 0.5 on-site hours
50.10(b) · $7,555.00 proposed
47.42 · $151.00 proposed
57.4102 · $151.00 proposed
47.42 · $1,126.00 proposed
57.3360 · $959.00 proposed
Regular Safety and Health Inspection · 23.0 on-site hours
57.4102 · $5,574.00 proposed
57.9313 · $504.00 proposed
57.3360 · $2,133.00 proposed
57.4102 · $5,574.00 proposed
57.11054 · $151.00 proposed
57.4102 · $5,574.00 proposed
SLIP OR FALL OF PERSON · DAYS AWAY FROM WORK ONLY
Accident narrative
IE was working in the laydown when EE became separated from the Skytrak while it remained in motion.
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.
—
i-80 Gold CorpcontrolsOsgood Mining Company, LLCoperatesGranite Creek Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 2601597—
Waterton Global Resource Management Cayman CorpcontrolsOsgood Mining Company, LLCoperatesGranite Creek Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 2601597—
Atna Resources Ltd.controlsAtna Resources, Inc.operatesGranite Creek Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 2601597—
Homestake Mining Company et alcontrolsHomestake Mining Company Of CaliforniaoperatesGranite Creek Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 2601597—
Barrick Gold Inc et alcontrolsHomestake Mining Company Of CaliforniaoperatesGranite Creek Mine
msha-controller-operator-history · controller/operator co-tenure derived on mine 2601597Other 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
23 historical accident/injury rows; 0 coded fatalities and 954 lost days across the published record.
ACCIDENT + INJURY RECORD12 since 2021
accidentsmine-production-quarterly02 / COMPLIANCEwatch
Violations and penalties
230 violation rows across the full record; 30 carry an S&S flag and $355,121 appears in current assessed amounts.
ENFORCEMENT ACTIVITY135 since 2021
inspectionsviolationsassessed-violationsorders-107a03 / HEALTHwatch
Occupational health samples
46 personal; 7 area. 11 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 EXPOSURE53 samples
personal-health-samplesarea-samples04 / PRODUCTIONcontext
Quarterly production and employment
11K employee hours and 30 summed average employees across reported subunits in the latest published quarter.
2026-Q20 tons
mine-production-quarterlymine-production-yearly05 / LEGALwatch
Contests, conferences and decisions
18 contested-violation rows, 18 civil-penalty docket/decision rows, and 14 conference records linked by issuance number.
POST-ISSUANCE LIFECYCLE50 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 CONTEXT15 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations07 / INSPECTIONScontext
Inspections
108 inspection events and 2K published inspection hours across the historical record.
OVERSIGHT COVERAGE50 since 2021
inspectionsviolationsHEALTH SAMPLING
Silica and quartz
Coal quartz, metal/nonmetal personal samples and area samples. Snapshot Oct 13, 2026. 4 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 47.44Temporary, portable containers.1 recent row ↗30 CFR 57.14100Safety defects; examination, correction and records.1 recent row ↗30 CFR 57.20011Barricades and warning signs.1 recent row ↗30 CFR 57.3360Ground support use.2 recent rows ↗30 CFR 57.9313Roadway maintenance.2 recent rows ↗30 CFR 50.10Immediate notification.1 recent row ↗30 CFR 47.42Label contents.2 recent rows ↗30 CFR 57.4102Spillage and leakage.2 recent rows ↗
RECENT PUBLIC RECORDS
Recent violations and samples
Latest records retained for inspection; aggregates above use the full source history.
510980447.44(b)Citation
510980357.14100(b)Citation
510980257.20011Citation
510980157.3360Citation
510500057.9313Citation
510497250.10(b)Citation
510497147.42Citation
510497057.4102Citation
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, <.1mgTruck Driver
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, <.1mgFront-end Loader Operator
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Unlisted Particulate, respirable, <1% QtzTruck Driver
C/E: 00.00Concentration: 0000.84 · limit: 0000.00Source unit unspecified
Unlisted Particulate, respirable, <1% QtzShotcrete/Gunite Man
C/E: 00.00Concentration: 0000.29 · limit: 0000.00Source unit unspecified
TC from EC @ 160Mucking Mach. Operator
C/E: 00.00Concentration: 0000.00 · limit: 0160.00Source unit unspecified
TC @ 160Mucking Mach. Operator
C/E: 02.23Concentration: 0356.00 · limit: 0160.00Source unit unspecified
SOURCE COVERAGE
Reporting dates and coverage
16 datasets contain linked records. Missing datasets are listed below.
DATASETROWSWINDOWSTATUS
Accident, Injuries, and Illnessessafety · contractors23Oct 22, 2012—Jul 27, 2026mine-keyed
Addresses of Recordidentity · logistics1May 1, 2014—May 1, 2014mine-keyed
Assessed Violationscompliance · legal221Mar 19, 2012—Jul 22, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal18Jul 10, 2013—Jun 24, 2025mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal14Jan 31, 2013—Sep 3, 2026mine-keyed
Contested Violationscompliance · legal18Mar 19, 2012—Mar 2, 2026mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety2,192Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety497Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance5Jan 1, 1980—May 24, 2016mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance223Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance50Not published—Not publishedmine-keyed
Inspectionssafety · compliance108Mar 15, 2012—Sep 30, 2026mine-keyed
Minesidentity · production · logistics1Not published—Not publishedmine-keyed
Metal and Nonmetal Area Sampleshealth · safety7Nov 9, 2015—Jul 18, 2024mine-keyed
Metal and Nonmetal Personal Health Sampleshealth · safety46Mar 12, 2013—Aug 6, 2025mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal230Mar 19, 2012—Jul 22, 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.