ALL STATUSES / OPERATOR PORTFOLIO

Mountain Cement Company LLC

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

MSHA OPERATOR IDL08533

MINE PORTFOLIO

6 of 6 mines and facilities

2025-01-01 – 2026-10-18. All statuses records; production reporting is not required.

MineLocation / typeCoal · short tonsHours workedViolationsAccident recordsOn-site inspection hours
Mountain Cement Company4800007 · Active6/8 quarters reportedAlbany, WYFacility · MSHA: Cement0465,69015925506.3
Bath Shale Quarry4801504 · AbandonedAlbany, WYSurface · MSHA: Common Shale——00—
Hutton Lake Shale Quarry4800540 · AbandonedAlbany, WYSurface · MSHA: Common Shale——00—
Portable Crusher #14800529 · AbandonedAlbany, WYSurface · MSHA: Dimension Limestone——00—
Red Buttes4800630 · AbandonedAlbany, WYSurface · MSHA: Gypsum——00—
Tuffa Pit4800288 · AbandonedAlbany, WYSurface · MSHA: Dimension Stone NEC——00—

LOCATION

Portfolio map

2 of 6 mines with usable MSHA coordinates. Select a marker to open a mine.

Mine coordinates

2025-01-01 – 2026-10-18Applies to production, safety and portfolio metrics. Silica samples have separate filters.

Violations

159

46 significant & substantial (S&S)

  1. 2025 Q122
  2. 2025 Q23
  3. 2025 Q333
  4. 2025 Q49
  5. 2026 Q123
  6. 2026 Q23
  7. 2026 Q366
  8. 2026 Q4 *0

Accident records

25

0 records classified as fatality

  1. 2025 Q10
  2. 2025 Q23
  3. 2025 Q31
  4. 2025 Q43
  5. 2026 Q18
  6. 2026 Q23
  7. 2026 Q37
  8. 2026 Q4 *0

Proposed penalties · USD

150,949.00

151 of 159 violations with amounts

  1. 2025 Q116,944
  2. 2025 Q2819
  3. 2025 Q323,472
  4. 2025 Q411,966
  5. 2026 Q124,480
  6. 2026 Q230,760
  7. 2026 Q342,508
  8. 2026 Q4 *—

On-site inspection hours

506.25

21 inspections · 21 with hours

  1. 2025 Q184.00
  2. 2025 Q297.25
  3. 2025 Q313.00
  4. 2025 Q4127.25
  5. 2026 Q135.50
  6. 2026 Q214.75
  7. 2026 Q3132.00
  8. 2026 Q4 *2.50
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q122716,944.0000184.0
2025-Q230819.0030397.3
2025-Q333623,472.0010213.0
2025-Q49411,966.00303127.3
2026-Q123524,480.0080535.5
2026-Q23230,760.0030314.8
2026-Q3662242,508.00703132.0
2026-Q4 *00—0012.5

Most cited CFR sections

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

Safety activity

  1. violation5052698
    Mountain Cement Company · 4800007

    56.20003(a) · $151.00 proposed

  2. violation5051491
    Mountain Cement Company · 4800007

    56.20003(a) · $151.00 proposed

  3. violation5051490
    Mountain Cement Company · 4800007

    56.20003(a) · $151.00 proposed

  4. violation5052697
    Mountain Cement Company · 4800007

    56.12028 · $592.00 proposed

  5. violation5052696
    Mountain Cement Company · 4800007

    56.13021 · $177.00 proposed

  6. violation5052695
    Mountain Cement Company · 4800007

    56.12006 · $592.00 proposed

  7. violation5052693
    Mountain Cement Company · 4800007

    56.12032 · S&S · $7,676.00 proposed

  8. violation5051489
    Mountain Cement Company · 4800007

    56.14100(b) · $177.00 proposed

  9. violation5051488
    Mountain Cement Company · 4800007

    56.12034 · $177.00 proposed

  10. violation9829787
    Mountain Cement Company · 4800007

    56.12032 · $151.00 proposed

  11. violation9829786
    Mountain Cement Company · 4800007

    56.14213(a) · S&S · $592.00 proposed

  12. violation9829785
    Mountain Cement Company · 4800007

    56.20003(a) · S&S · $177.00 proposed

  13. violation9829784
    Mountain Cement Company · 4800007

    56.4104(b) · $151.00 proposed

  14. violation9829783
    Mountain Cement Company · 4800007

    56.4101 · $697.00 proposed

  15. violation5052691
    Mountain Cement Company · 4800007

    56.14112 · S&S · $5,144.00 proposed

  16. violation5052690
    Mountain Cement Company · 4800007

    56.20003(a) · $209.00 proposed

  17. violation5052689
    Mountain Cement Company · 4800007

    56.12004 · $697.00 proposed

  18. violation5052688
    Mountain Cement Company · 4800007

    56.20003(a) · S&S · $1,037.00 proposed

  19. violation5052687
    Mountain Cement Company · 4800007

    56.12028 · $697.00 proposed

  20. violation5052686
    Mountain Cement Company · 4800007

    56.20003(a) · $697.00 proposed

  21. violation5051487
    Mountain Cement Company · 4800007

    56.16006 · $697.00 proposed

  22. violation5051486
    Mountain Cement Company · 4800007

    56.14115(b) · $209.00 proposed

  23. violation5051485
    Mountain Cement Company · 4800007

    56.12004 · $209.00 proposed

  24. accident220251890022
    Mountain Cement Company · 4800007

    STRIKING OR BUMPING · NO DYS AWY FRM WRK,NO RSTR ACT

    Accident narrative

    A plant employee was walking up the ramp to the 700 belt to inspect the grinding aid flow. While ducking under one of the newly installed beams for the weigh feeder, the employee raised their head and struck forehead on the second beam. The impact caused their safety glasses to shift and cut deeply on their forehead.

  25. inspectionF015954
    Mountain Cement Company · 4800007

    Regular Safety and Health Inspection · 77.5 on-site hours

Safety sources and definitions

MSHA Violations (issue date), Accidents (accident date), and Inspections (begin date). Snapshot 2026-10-18.

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.