ACTIVE / OPERATOR PORTFOLIO

JB Stone

Membership and operating status are from the latest MSHA Mines snapshot. Open a mine for its ownership history.

MSHA OPERATOR ID0120009

MINE PORTFOLIO

1 of 1 mines and facilities

2025-01-01 – 2026-10-13. Active records; production reporting is not required.

MineLocation / typeCoal · short tonsHours workedViolationsAccident recordsOn-site inspection hours
Bernardo's Pit #24105134 · Active6/8 quarters reportedWilliamson, TXSurface · MSHA: Dimension Limestone0149,3819040.5

LOCATION

Mine location

1 of 1 mine with usable MSHA coordinates. Select a marker to open a mine.

Mine coordinates

2025-01-01 – 2026-10-13Applies to production, safety and portfolio metrics. Silica samples have separate filters.

Violations

9

2 significant & substantial (S&S)

  1. 2025 Q14
  2. 2025 Q22
  3. 2025 Q30
  4. 2025 Q40
  5. 2026 Q11
  6. 2026 Q20
  7. 2026 Q32
  8. 2026 Q4 *0

Accident records

0

0 records classified as fatality

  1. 2025 Q10
  2. 2025 Q20
  3. 2025 Q30
  4. 2025 Q40
  5. 2026 Q10
  6. 2026 Q20
  7. 2026 Q30
  8. 2026 Q4 *0

Proposed penalties · USD

1,826.00

9 of 9 violations with amounts

  1. 2025 Q1630
  2. 2025 Q2302
  3. 2025 Q3—
  4. 2025 Q4—
  5. 2026 Q1151
  6. 2026 Q2—
  7. 2026 Q3743
  8. 2026 Q4 *—

On-site inspection hours

40.50

4 inspections · 4 with hours

  1. 2025 Q19.75
  2. 2025 Q218.50
  3. 2025 Q3—
  4. 2025 Q4—
  5. 2026 Q14.00
  6. 2026 Q2—
  7. 2026 Q38.25
  8. 2026 Q4 *—
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q141630.000019.8
2025-Q220302.0000118.5
2025-Q300—000—
2025-Q400—000—
2026-Q110151.000014.0
2026-Q200—000—
2026-Q321743.000018.3
2026-Q4 *00—000—

Most cited CFR sections

All violations issued in the selected period. Counts combine subsections.

Safety activity

  1. inspectionF02EC92
    Bernardo's Pit #2 · 4105134

    Regular Safety and Health Inspection · 8.3 on-site hours

  2. violation5131265
    Bernardo's Pit #2 · 4105134

    56.12032 · $151.00 proposed

  3. violation5131264
    Bernardo's Pit #2 · 4105134

    56.9300(b) · S&S · $592.00 proposed

  4. inspectionF031A3B
    Bernardo's Pit #2 · 4105134

    Regular Safety and Health Inspection · 4.0 on-site hours

  5. violation5173229
    Bernardo's Pit #2 · 4105134

    56.14207 · $151.00 proposed

  6. inspectionF018F4A
    Bernardo's Pit #2 · 4105134

    Regular Safety and Health Inspection · 18.5 on-site hours

  7. violation5003446
    Bernardo's Pit #2 · 4105134

    56.14100(b) · $151.00 proposed

  8. violation5003445
    Bernardo's Pit #2 · 4105134

    56.14132(a) · $151.00 proposed

  9. inspectionF015088
    Bernardo's Pit #2 · 4105134

    Regular Safety and Health Inspection · 9.8 on-site hours

  10. violation9796735
    Bernardo's Pit #2 · 4105134

    56.20013 · $151.00 proposed

  11. violation9796734
    Bernardo's Pit #2 · 4105134

    56.20013 · $151.00 proposed

  12. violation9796733
    Bernardo's Pit #2 · 4105134

    56.11001 · S&S · $177.00 proposed

  13. violation9796732
    Bernardo's Pit #2 · 4105134

    56.4101 · $151.00 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.

SELECTED PORTFOLIO

1 linked controller.

Relationships reflect the selected mine status and current MSHA controller/operator fields.