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Keystone Blue Quarry safety activity

MSHA violations, accident reports and inspections.

2025-01-01 – 2026-10-28Database snapshot · 2026-10-28

Safety activity

  1. Regular Safety and Health Inspection

    inspectionRecord F0155D8

    10.5 on-site hours reported

  2. Regular Safety and Health Inspection

    inspectionRecord F012002

    8.0 on-site hours reported

  3. Handtools (nonpowered)

    accidentRecord 220253170091

    Dys awy frm wrk & restrctd act

    Accident narrative

    Employee was breaking a sideline this process involves striking the wedges swinging the hammer with a side-to-side motion. While doing this the employee missed the wedge and struck the wall causing the hammer to deflect and rotated the employee rapidly causing a strain to the lower lumbar.

  4. Regular Safety and Health Inspection

    inspectionRecord F0258AE

    15.5 on-site hours reported

  5. Regular Safety and Health Inspection

    inspectionRecord F016A77

    3.5 on-site hours reported

  6. Handtools (nonpowered)

    accidentRecord 220250590017

    Days restricted activity only

    Accident narrative

    Miner was adding a section of drill steel using a wrench to tighten the connection. The miner's left thumb was caught between the drill boom and the wrench causing a small avulsion to the left thumb.

Sources and definitions

MSHA Violations (issue date), Accidents (accident date) and Inspections (begin date).

Violation titles use current CFR headings to identify the cited rule; they are not the inspector’s account of what happened.

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.