MINE DETAILS
Hercules Cement LP
MSHA MINE ID3600006
LOCATION
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Hercules Cement LP40.75278, -75.26722Open 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
388,798reported 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 | 71,634 | 0.00 | 135 | 1/1 mines reporting |
| 2025 Q2 | 0 | 65,438 | 0.00 | 129 | 1/1 mines reporting |
| 2025 Q3 | 0 | 63,762 | 0.00 | 128 | 1/1 mines reporting |
| 2025 Q4 | 0 | 61,777 | 0.00 | 129 | 1/1 mines reporting |
| 2026 Q1 | 0 | 62,391 | 0.00 | 125 | 1/1 mines reporting |
| 2026 Q2 | 0 | 63,796 | 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
767 significant & substantial (S&S)
Accident records
50 records classified as fatality
Proposed penalties · USD
24,936.0057 of 76 violations with amounts
On-site inspection hours
245.7512 inspections · 12 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 | 24 | 4 | 14,725.00 | 1 | 0 | 2 | 61.8 |
| 2025-Q2 | 0 | 0 | — | 0 | 0 | 0 | — |
| 2025-Q3 | 14 | 0 | 4,613.00 | 1 | 0 | 3 | 62.5 |
| 2025-Q4 | 0 | 0 | — | 1 | 0 | 1 | 1.8 |
| 2026-Q1 | 18 | 0 | 4,901.00 | 0 | 0 | 1 | 69.8 |
| 2026-Q2 | 1 | 1 | 697.00 | 2 | 0 | 1 | 3.8 |
| 2026-Q3 | 19 | 2 | — | 0 | 0 | 4 | 46.3 |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
Compliance Follow-up Inspection · 0.0 on-site hours
Compliance Follow-up Inspection · 1.0 on-site hours
56.14112(a)(1)
56.11001
56.11001
56.14112(a)(1)
56.14101(a)(2)
56.14112(b)
56.4602
47.41(a)
56.14112(a)(1)
56.14112(a)(1)
56.14112(a)(1)
56.12023
56.4602
56.13021
56.20003(a) · S&S
Regular Safety and Health Inspection · 45.3 on-site hours
56.11001 · S&S
56.14112(b)
56.12004
56.20003(a)
Spot Inspection · 0.0 on-site hours
HANDLING OF MATERIALS · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
An employee was filling bags when one of the bags began to shift out of position. The employee reached to adjust the bag but missed and made contact with the saddle backing, resulting in a cut to EE's right index finger.
HANDTOOLS (NONPOWERED) · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
While employee was cutting the rubber insulation from around the wires in the motor junction box, their retractable utility knife cut through abrasion-resistant glove on left hand, resulting in a laceration of thumb. They immediately went back to the Electrical Shop to clean and perform basic first aid on the wound.
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.
—
Buzzi S p AcontrolsBuzzi Unicem USAoperatesHercules Cement LP
msha-controller-operator-history · controller/operator co-tenure derived on mine 3600006—
Hanson PLCcontrolsHercules Cement CompanyoperatesHercules Cement LP
msha-controller-operator-history · controller/operator co-tenure derived on mine 3600006—
Amcord InccontrolsHercules Cement CompanyoperatesHercules Cement LP
msha-controller-operator-history · controller/operator co-tenure derived on mine 3600006Other 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
340 historical accident/injury rows; 1 coded fatalities and 10,251 lost days across the published record.
ACCIDENT + INJURY RECORD46 since 2021
accidentsmine-production-quarterly02 / COMPLIANCEwatch
Violations and penalties
1,273 violation rows across the full record; 280 carry an S&S flag and $552,904 appears in current assessed amounts.
ENFORCEMENT ACTIVITY317 since 2021
inspectionsviolationsassessed-violationsorders-107a03 / HEALTHwatch
Occupational health samples
179 personal. 10 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 EXPOSURE179 samples
personal-health-samples04 / PRODUCTIONcontext
Quarterly production and employment
64K 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, 42 civil-penalty docket/decision rows, and 58 conference records linked by issuance number.
POST-ISSUANCE LIFECYCLE138 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 CONTEXT52 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations07 / INSPECTIONScontext
Inspections
196 inspection events and 8K published inspection hours across the historical record.
OVERSIGHT COVERAGE53 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 |
|---|---|---|---|---|---|
| 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 56.14112Construction and maintenance of guards.6 recent rows ↗30 CFR 56.11001Safe access.2 recent rows ↗30 CFR 56.14101Brakes.1 recent row ↗30 CFR 56.4602Gauges and regulators.1 recent row ↗30 CFR 47.41Requirement for container labels.1 recent row ↗30 CFR 56.12023Guarding electrical connections and resistor grids.1 recent row ↗
RECENT PUBLIC RECORDS
Recent violations and samples
Latest records retained for inspection; aggregates above use the full source history.
507998756.14112(a)(1)Citation
507998656.11001Citation
507998556.11001Citation
507908056.14112(a)(1)Citation
507907956.14101(a)(2)Citation
507569656.14112(b)Citation
526033356.4602Citation
526033247.41(a)Citation
Coal dust, noise and other contaminants. Silica records above ↑
Unlisted Particulate, total, <1% QtzBagging Operator
C/E: 00.00Concentration: 0005.09 · limit: 0000.00Source unit unspecified
Unlisted Particulate, total, <1% QtzUtility Man
C/E: 00.00Concentration: 0013.70 · limit: 0000.00Source unit unspecified
Unlisted Particulate, total, <1% QtzUtility Man
C/E: 00.00Concentration: 0004.66 · limit: 0000.00Source unit unspecified
Unlisted Particulate, total, <1% QtzBuilding Repair/Maint.
C/E: 00.00Concentration: 0002.79 · limit: 0000.00Source unit unspecified
Zinc oxide fumesPipe Fitter/Millright/Plumber
C/E: 00.00Concentration: 0000.00 · limit: 0010.00Source unit unspecified
Vanadium fumesPipe Fitter/Millright/Plumber
C/E: 00.00Concentration: 0000.00 · limit: 0050.00Source unit unspecified
Nickel fumesPipe Fitter/Millright/Plumber
C/E: 00.00Concentration: 0000.00 · limit: 0003.00Source unit unspecified
Molybdenum fumesPipe Fitter/Millright/Plumber
C/E: 00.00Concentration: 0000.00 · limit: 0020.00Source unit unspecified
SOURCE COVERAGE
Reporting dates and coverage
15 datasets contain linked records. Missing datasets are listed below.
DATASETROWSWINDOWSTATUS
Accident, Injuries, and Illnessessafety · contractors340Jan 28, 2000—Jun 11, 2026mine-keyed
Addresses of Recordidentity · logistics1Jan 19, 1979—Jan 19, 1979mine-keyed
Assessed Violationscompliance · legal1,239Feb 29, 2000—Apr 8, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal42Feb 13, 2003—Aug 7, 2026mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal58Jul 22, 2004—Aug 29, 2024mine-keyed
Contested Violationscompliance · legal38Jun 6, 2007—Feb 17, 2026mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety4,957Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety1,143Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance3Jan 1, 1950—Dec 14, 1980mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance318Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance81Not published—Not publishedmine-keyed
Inspectionssafety · compliance196Feb 29, 2000—Sep 23, 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 · safety179Nov 1, 2000—Jul 22, 2025mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal1,273Feb 29, 2000—Sep 16, 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.