MINE DETAILS
1604 QUARRY & PLANT
MSHA MINE ID4103019
LOCATION
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- 1604 QUARRY & PLANT29.61083, -98.37333Open 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
403,621reported 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 | 70,873 | 0.00 | 143 | 1/1 mines reporting |
| 2025 Q2 | 0 | 67,845 | 0.00 | 144 | 1/1 mines reporting |
| 2025 Q3 | 0 | 67,619 | 0.00 | 142 | 1/1 mines reporting |
| 2025 Q4 | 0 | 69,727 | 0.00 | 139 | 1/1 mines reporting |
| 2026 Q1 | 0 | 68,283 | 0.00 | 138 | 1/1 mines reporting |
| 2026 Q2 | 0 | 59,274 | 0.00 | 146 | 1/1 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-13
Violations
231 significant & substantial (S&S)
Accident records
100 records classified as fatality
Proposed penalties · USD
4,515.0022 of 23 violations with amounts
On-site inspection hours
143.756 inspections · 6 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 | 3 | 0 | 453.00 | 0 | 0 | 1 | 46.8 |
| 2025-Q2 | 0 | 0 | — | 2 | 0 | 1 | 27.0 |
| 2025-Q3 | 6 | 0 | 906.00 | 2 | 0 | 1 | 9.3 |
| 2025-Q4 | 4 | 0 | 604.00 | 1 | 0 | 1 | 23.3 |
| 2026-Q1 | 0 | 0 | — | 2 | 0 | 0 | — |
| 2026-Q2 | 10 | 1 | 2,552.00 | 3 | 0 | 2 | 37.5 |
| 2026-Q3 | 0 | 0 | — | 0 | 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
MACHINERY · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
employee smashed hand when boulder came dislodged inside primary crusher.
HANDLING OF MATERIALS · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
Metal plate fell on right foot
Compliance Follow-up Inspection · 1.0 on-site hours
56.12008 · $313.00 proposed
56.15005 · S&S · $909.00 proposed
Description not reported
56.20003(c) · $151.00 proposed
56.11003 · $151.00 proposed
56.15004 · $177.00 proposed
56.16006 · $151.00 proposed
56.12004 · $398.00 proposed
Regular Safety and Health Inspection · 36.5 on-site hours
56.13021 · $151.00 proposed
56.13021 · $151.00 proposed
SLIP OR FALL OF PERSON · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
employee slipped on wet ground and sprain left ankle.
HANDLING OF MATERIALS · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
The employee and a contractor were removing an inspection cover from the top of the clinker cooler drag-chain. The employee's tip of pinky finger on left hand became pinched between the bottom of the cover and a metal flange as they placed the cover on the ground. The employee's fingernail was almost avulsed from the nail bed
HANDLING OF MATERIALS · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
Employee was pushing a small pile of material with their right foot in a sweeping motion, when their left foot slipped on loose material. Instead of falling forward, they leaned back and turned their body in a twisting motion, during which time they felt a pop in their knee.
56.4201(a)(1) · $151.00 proposed
56.11010 · $151.00 proposed
56.13021 · $151.00 proposed
Regular Safety and Health Inspection · 23.3 on-site hours
56.14207 · $151.00 proposed
STRIKING OR BUMPING · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
Employee was bending over to pick up a trash bag from a box that was on the floor. The employee did not notice a metal pipe that was next to the box on the floor and as the employee bent down to pick up a trash bag, EE's left forehead came in contact with the end of the metal pipe resulting in a laceration to the top left side of EE's forehead.
Spot Inspection · 9.3 on-site hours
HANDLING OF MATERIALS · NO DYS AWY FRM WRK,NO RSTR ACT
Accident narrative
As the employee was stepping out of the raw mill, the employee placed a hand on the raw mill tire hook and disrupted the accumulated dust causing it to become airborne. The airborne dust entered the airstream of the cooling vent fans and blew onto the employees face and under safety glasses causing dust to enter left eye.
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 AcontrolsAlamo Cement Companyoperates1604 QUARRY & PLANT
msha-controller-operator-history · controller/operator co-tenure derived on mine 4103019—
Buzzi S p AcontrolsAlamo Cement Company Ltdoperates1604 QUARRY & PLANT
msha-controller-operator-history · controller/operator co-tenure derived on mine 4103019Other 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
155 historical accident/injury rows; 0 coded fatalities and 1,488 lost days across the published record.
ACCIDENT + INJURY RECORD20 since 2021
accidentsmine-production-quarterly02 / COMPLIANCEwatch
Violations and penalties
378 violation rows across the full record; 58 carry an S&S flag and $108,859 appears in current assessed amounts.
ENFORCEMENT ACTIVITY70 since 2021
inspectionsviolationsassessed-violationsorders-107a03 / HEALTHcontext
Occupational health samples
16 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 EXPOSURE16 samples
personal-health-samples04 / PRODUCTIONcontext
Quarterly production and employment
59K employee hours and 146 summed average employees across reported subunits in the latest published quarter.
2026-Q20 tons
mine-production-quarterlymine-production-yearly05 / LEGALwatch
Contests, conferences and decisions
72 contested-violation rows, 79 civil-penalty docket/decision rows, and 44 conference records linked by issuance number.
POST-ISSUANCE LIFECYCLE195 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 CONTEXT23 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations07 / INSPECTIONScontext
Inspections
111 inspection events and 3K published inspection hours across the historical record.
OVERSIGHT COVERAGE25 since 2021
inspectionsviolationsHEALTH SAMPLING
Silica and quartz
Coal quartz, metal/nonmetal personal samples and area samples. Snapshot Oct 13, 2026. 3 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.1 recent row ↗30 CFR 56.15005Safety belts and lines.1 recent row ↗30 CFR 56.20003Housekeeping.1 recent row ↗30 CFR 56.11003Construction and maintenance of ladders.1 recent row ↗30 CFR 56.15004Eye protection.1 recent row ↗30 CFR 56.16006Protection of gas cylinder valves.1 recent row ↗30 CFR 56.12004Electrical conductors.1 recent row ↗30 CFR 56.13021High-pressure hose connections.2 recent rows ↗
RECENT PUBLIC RECORDS
Recent violations and samples
Latest records retained for inspection; aggregates above use the full source history.
517643356.12008Citation
517643256.15005S&S
5176431—Order
517643056.20003(c)Citation
517642956.11003Citation
517642856.15004Citation
517642756.16006Citation
517642656.12004Citation
Coal dust, noise and other contaminants. Silica records above ↑
Unlisted Particulate, respirable, <1% QtzLaborer, Bullgang
C/E: 00.00Concentration: 0000.89 · limit: 0000.00Source unit unspecified
Unlisted Particulate, respirable, <1% QtzLaborer, Bullgang
C/E: 00.00Concentration: 0001.19 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgBuilding Repair/Maint.
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Chromic acid & Chromate fumesBagging Operator
C/E: 00.00Concentration: 0000.17 · limit: 0100.00Source unit unspecified
Chromic acid & Chromate fumesBobcat Operator
C/E: 00.01Concentration: 0000.56 · limit: 0100.00Source unit unspecified
Chromic acid & Chromate fumesFront-end Loader Operator
C/E: 00.00Concentration: 0000.47 · limit: 0100.00Source unit unspecified
Calcium oxideUtility Man
C/E: 00.04Concentration: 0000.21 · limit: 0005.00Source unit unspecified
Calcium oxideUtility Man
C/E: 00.04Concentration: 0000.20 · limit: 0005.00Source unit unspecified
SOURCE COVERAGE
Reporting dates and coverage
15 datasets contain linked records. Missing datasets are listed below.
DATASETROWSWINDOWSTATUS
Accident, Injuries, and Illnessessafety · contractors155Feb 16, 2000—Jun 29, 2026mine-keyed
Addresses of Recordidentity · logistics1Sep 24, 1986—Sep 24, 1986mine-keyed
Assessed Violationscompliance · legal373Jun 26, 2000—May 14, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal79Oct 24, 2002—Apr 3, 2025mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal44Aug 28, 2001—Dec 23, 2025mine-keyed
Contested Violationscompliance · legal72Sep 22, 2004—Sep 5, 2024mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety3,047Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety717Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance2Jun 1, 1980—Jan 1, 2011mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance318Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance81Not published—Not publishedmine-keyed
Inspectionssafety · compliance111Jun 26, 2000—May 20, 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 · safety16Aug 5, 2009—Sep 3, 2025mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal378Jun 26, 2000—May 14, 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.