ACTIVE / CONTROLLER PORTFOLIO

Dennis Swapp

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

MSHA CONTROLLER IDM10973

MINE PORTFOLIO

2 of 2 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
Swapp Custom Crushing Plant #20203007 · Active6/8 quarters reportedGreenlee, AZSurface · MSHA: Construction Sand and Gravel05,3091012.3
Swapp Custom Crushing Plant #30203144 · Active6/8 quarters reportedGreenlee, AZSurface · MSHA: Construction Sand and Gravel029,1562024.5

LOCATION

Portfolio map

2 of 2 mines 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

3

1 significant & substantial (S&S)

  1. 2025 Q11
  2. 2025 Q20
  3. 2025 Q30
  4. 2025 Q40
  5. 2026 Q11
  6. 2026 Q20
  7. 2026 Q31
  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

583.00

2 of 3 violations with amounts

  1. 2025 Q1151
  2. 2025 Q2—
  3. 2025 Q3—
  4. 2025 Q4—
  5. 2026 Q1432
  6. 2026 Q2—
  7. 2026 Q3—
  8. 2026 Q4 *—

On-site inspection hours

36.75

8 inspections · 8 with hours

  1. 2025 Q19.00
  2. 2025 Q2—
  3. 2025 Q35.00
  4. 2025 Q4—
  5. 2026 Q19.50
  6. 2026 Q2—
  7. 2026 Q313.25
  8. 2026 Q4 *—
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q110151.000029.0
2025-Q200—000—
2025-Q300—0025.0
2025-Q400—000—
2026-Q111432.000029.5
2026-Q200—000—
2026-Q310—00213.3
2026-Q4 *00—000—

Most cited CFR sections

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

Safety activity

  1. inspectionF04736A
    Swapp Custom Crushing Plant #2 · 0203007

    Regular Safety and Health Inspection · 3.8 on-site hours

  2. violation5059392
    Swapp Custom Crushing Plant #3 · 0203144

    56.9300(b)

  3. inspectionF004815
    Swapp Custom Crushing Plant #3 · 0203144

    Regular Safety and Health Inspection · 9.5 on-site hours

  4. inspectionF004801
    Swapp Custom Crushing Plant #2 · 0203007

    Regular Safety and Health Inspection · 1.5 on-site hours

  5. inspectionF004800
    Swapp Custom Crushing Plant #3 · 0203144

    Regular Safety and Health Inspection · 8.0 on-site hours

  6. violation5052164
    Swapp Custom Crushing Plant #3 · 0203144

    56.14103(b) · S&S · $432.00 proposed

  7. inspectionF017EBB
    Swapp Custom Crushing Plant #2 · 0203007

    Regular Safety and Health Inspection · 2.0 on-site hours

  8. inspectionF017EBA
    Swapp Custom Crushing Plant #3 · 0203144

    Regular Safety and Health Inspection · 3.0 on-site hours

  9. inspectionF00BD5D
    Swapp Custom Crushing Plant #3 · 0203144

    Regular Safety and Health Inspection · 4.0 on-site hours

  10. violation9829435
    Swapp Custom Crushing Plant #2 · 0203007

    56.14100(b) · $151.00 proposed

  11. inspectionF01637F
    Swapp Custom Crushing Plant #2 · 0203007

    Regular Safety and Health Inspection · 5.0 on-site hours

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 operator.

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