MINE DETAILS
Balcones Quarry
MSHA MINE ID4100994
LOCATION
Mine location
1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.
Mine coordinates
- Balcones Quarry29.67056, -98.19000Open 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
611,735reported 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 | 101,496 | 0.00 | 164 | 1/1 mines reporting |
| 2025 Q2 | 0 | 103,256 | 0.00 | 162 | 1/1 mines reporting |
| 2025 Q3 | 0 | 103,353 | 0.00 | 166 | 1/1 mines reporting |
| 2025 Q4 | 0 | 103,271 | 0.00 | 175 | 1/1 mines reporting |
| 2026 Q1 | 0 | 101,112 | 0.00 | 163 | 1/1 mines reporting |
| 2026 Q2 | 0 | 99,247 | 0.00 | 167 | 1/1 mines reporting |
| 2026 Q3 | — | — | — | — | No report |
| 2026 Q4 | — | — | — | — | No report |
Safety and enforcement
2025-01-01 – 2026-10-13
Violations
221 significant & substantial (S&S)
Accident records
80 records classified as fatality
Proposed penalties · USD
20,387.0017 of 22 violations with amounts
On-site inspection hours
126.505 inspections · 5 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 | 4 | 0 | 4,515.00 | 2 | 0 | 1 | 25.0 |
| 2025-Q2 | 0 | 0 | — | 2 | 0 | 0 | — |
| 2025-Q3 | 6 | 0 | 14,534.00 | 1 | 0 | 2 | 40.5 |
| 2025-Q4 | 0 | 0 | — | 1 | 0 | 0 | — |
| 2026-Q1 | 7 | 1 | 1,338.00 | 1 | 0 | 1 | 19.3 |
| 2026-Q2 | 0 | 0 | — | 0 | 0 | 0 | — |
| 2026-Q3 | 5 | 0 | — | 1 | 0 | 1 | 41.8 |
| 2026-Q4 * | 0 | 0 | — | 0 | 0 | 0 | — |
Most cited CFR sections
All violations issued in the selected period. Counts combine subsections.
Safety activity
56.12008
56.14100(b)
56.4201(a)(2)
56.3200
56.12008
Regular Safety and Health Inspection · 41.8 on-site hours
SLIP OR FALL OF PERSON · DAYS AWAY FROM WORK ONLY
Accident narrative
Employee fell while accessing the water tank on DR 26 - Cat 6200 drill. Once standing on the deck of the drill EE lost EE's footing.
47.41(a) · $151.00 proposed
56.14100(b) · $151.00 proposed
56.20003(c) · S&S · $432.00 proposed
56.4201(a)(2) · $151.00 proposed
56.14100(b) · $151.00 proposed
56.14100(b) · $151.00 proposed
56.14100(b) · $151.00 proposed
Regular Safety and Health Inspection · 19.3 on-site hours
HANDLING OF MATERIALS · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
In occurrence while EE was assisting an EE, this EE stepped backwards onto EE's left foot causing a closed displacement fracture of the third metatarsal bone.
HANDTOOLS (NONPOWERED) · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
While cutting belt at tail pulley the blade slipped out and hit employees left arm. Left arm was positioned in a bad area when this happened. The cut was on EE's forearm 3 inches past base of thumb. Cut got fatty tissue and some mussel.
Spot Inspection · 14.5 on-site hours
MACHINERY · DAYS RESTRICTED ACTIVITY ONLY
Accident narrative
Electrician modifying a threaded nipple with portable bandsaw for conduit installation to transformer and lacerated EE's right middle fingertip.
Regular Safety and Health Inspection · 26.0 on-site hours
47.41(a) · $642.00 proposed
56.14109(a) · $3,184.00 proposed
56.14132(a) · $642.00 proposed
56.20003(a) · $3,184.00 proposed
56.11012 · $2,133.00 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.
—
Cemex S AcontrolsCEMEX Construction Materials South, LLCoperatesBalcones Quarry
msha-controller-operator-history · controller/operator co-tenure derived on mine 4100994—
Cemex S AcontrolsCemex IncoperatesBalcones Quarry
msha-controller-operator-history · controller/operator co-tenure derived on mine 4100994—
Lafarge Coppee & Parker Lafarge InccontrolsParker Lafarge IncoperatesBalcones Quarry
msha-controller-operator-history · controller/operator co-tenure derived on mine 4100994—
Robert H Parker et alcontrolsParker Brothers & Company IncoperatesBalcones Quarry
msha-controller-operator-history · controller/operator co-tenure derived on mine 4100994—
Briscoe K Parker Jr et alcontrolsParker Brothers & Company IncoperatesBalcones Quarry
msha-controller-operator-history · controller/operator co-tenure derived on mine 4100994Other 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
88 historical accident/injury rows; 1 coded fatalities and 707 lost days across the published record.
ACCIDENT + INJURY RECORD22 since 2021
accidentsmine-production-quarterly02 / COMPLIANCEwatch
Violations and penalties
530 violation rows across the full record; 116 carry an S&S flag and $327,980 appears in current assessed amounts.
ENFORCEMENT ACTIVITY119 since 2021
inspectionsviolationsassessed-violationsorders-107a03 / HEALTHwatch
Occupational health samples
18 personal. 1 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
99K employee hours and 167 summed average employees across reported subunits in the latest published quarter.
2026-Q20 tons
mine-production-quarterlymine-production-yearly05 / LEGALwatch
Contests, conferences and decisions
71 contested-violation rows, 71 civil-penalty docket/decision rows, and 76 conference records linked by issuance number.
POST-ISSUANCE LIFECYCLE218 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 CONTEXT26 linked entities
contractor-production-quarterlycontractor-production-yearlyaccidentsviolations07 / INSPECTIONScontext
Inspections
96 inspection events and 3K published inspection hours across the historical record.
OVERSIGHT COVERAGE22 since 2021
inspectionsviolationsHEALTH SAMPLING
Silica and quartz
Coal quartz, metal/nonmetal personal samples and area samples. Snapshot Oct 13, 2026. 15 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.2 recent rows ↗30 CFR 56.14100Safety defects; examination, correction and records.5 recent rows ↗30 CFR 56.4201Inspection.2 recent rows ↗30 CFR 56.3200Correction of hazardous conditions.1 recent row ↗30 CFR 47.41Requirement for container labels.1 recent row ↗30 CFR 56.20003Housekeeping.1 recent row ↗
RECENT PUBLIC RECORDS
Recent violations and samples
Latest records retained for inspection; aggregates above use the full source history.
513392556.12008Citation
513392456.14100(b)Citation
513392356.4201(a)(2)Citation
513392256.3200Citation
513392156.12008Citation
500595447.41(a)Citation
500595356.14100(b)Citation
500595256.20003(c)S&S
Coal dust, noise and other contaminants. Silica records above ↑
Respirable dust, <.1mgCrusher Oper/Worker
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgScreen/Scalper Operator
C/E: 00.00Concentration: 0000.00 · limit: 0000.00Source unit unspecified
Respirable dust, <.1mgUtility Man
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 · contractors88Dec 21, 2000—Aug 24, 2026mine-keyed
Addresses of Recordidentity · logistics1Mar 27, 1972—Mar 27, 1972mine-keyed
Assessed Violationscompliance · legal515Apr 17, 2000—Mar 4, 2026mine-keyed
Civil Penalty Dockets and Decisionscompliance · legal71Aug 29, 2011—Jun 11, 2026mine-keyed
Coal Dust Sampleshealth · safety—No published rowsabsent / not applicable
Conferencescompliance · legal76Jan 14, 2001—Aug 9, 2018mine-keyed
Contested Violationscompliance · legal71Aug 31, 2010—Jul 23, 2025mine-keyed
Contractor Employment and Production — Quarterlycontractors · production · safety3,530Not published—Not publishedentity-linked
Contractor Employment and Production — Yearlycontractors · production · safety794Not published—Not publishedentity-linked
Controller and Operator Historyidentity · compliance5Jan 1, 1950—Mar 22, 2011mine-keyed
Mine Employment and Production — Quarterlyproduction · safety · compliance302Not published—Not publishedmine-keyed
Mine Employment and Production — Yearlyproduction · safety · compliance77Not published—Not publishedmine-keyed
Inspectionssafety · compliance96Apr 17, 2000—Sep 5, 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 · safety18Sep 2, 2004—Sep 3, 2025mine-keyed
Noise Sampleshealth · safety · equipment—No published rowsabsent / not applicable
Quartz Samples — Coalhealth · safety—No published rowsabsent / not applicable
Violationscompliance · safety · legal530Apr 17, 2000—Sep 9, 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.