ALL STATUSES / CONTROLLER PORTFOLIO

Southdown Inc

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

MSHA CONTROLLER IDM00201

MINE PORTFOLIO

9 of 9 mines and facilities

2025-01-01 – 2026-10-17. All statuses records; production reporting is not required.

MineLocation / typeCoal · short tonsHours workedViolationsAccident recordsOn-site inspection hours
Amarillo Plant & Quarry4100062 · AbandonedPotter, TXSurface · MSHA: Crushed, Broken Limestone NEC——00—
Amarillo Quarry4102972 · AbandonedPotter, TXSurface · MSHA: Crushed, Broken Limestone NEC——00—
El Paso4100061 · AbandonedEl Paso, TXSurface · MSHA: Crushed, Broken Limestone NEC——00—
Fairborn Quarry3303786 · AbandonedAshland, OHSurface · MSHA: Crushed, Broken Limestone NEC——00—
Florida Mining & Materials Corp-Crushing0800930 · AbandonedHernando, FLSurface · MSHA: Crushed, Broken Limestone NEC——00—
Quarry-Quarry Plant0404230 · AbandonedSan Bernardino, CASurface · MSHA: Crushed, Broken Limestone NEC——00—
Southwestern Portland Cement Co Min4102939 · AbandonedEctor, TXSurface · MSHA: Crushed, Broken Limestone NEC——00—
Southwestern Portland Cement Co Min4102940 · AbandonedEl Paso, TXSurface · MSHA: Crushed, Broken Limestone NEC——00—
Wayne Quarry3303585 · AbandonedMontgomery, OHSurface · MSHA: Crushed, Broken Limestone NEC——00—

LOCATION

Portfolio map

0 of 9 mines with usable MSHA coordinates. Select a marker to open a mine.

2025-01-01 – 2026-10-17Applies to production, safety and portfolio metrics. Silica samples have separate filters.

Violations

0

0 significant & substantial (S&S)

  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

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

—

0 of 0 violations with amounts

  1. 2025 Q1—
  2. 2025 Q2—
  3. 2025 Q3—
  4. 2025 Q4—
  5. 2026 Q1—
  6. 2026 Q2—
  7. 2026 Q3—
  8. 2026 Q4 *—

On-site inspection hours

—

0 inspections · 0 with hours

  1. 2025 Q1—
  2. 2025 Q2—
  3. 2025 Q3—
  4. 2025 Q4—
  5. 2026 Q1—
  6. 2026 Q2—
  7. 2026 Q3—
  8. 2026 Q4 *—
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q100—000—
2025-Q200—000—
2025-Q300—000—
2025-Q400—000—
2026-Q100—000—
2026-Q200—000—
2026-Q300—000—
2026-Q4 *00—000—

Most cited CFR sections

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

SectionViolationsS&S

No violation records in this period.

Safety activity

    No matching records in this period.

    Safety sources and definitions

    MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-17.

    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

    2 linked operators.

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