ACTIVE / CONTROLLER PORTFOLIO

Chad M Serbus; Craig G Serbus

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

MSHA CONTROLLER ID0172502

MINE PORTFOLIO

1 of 1 mines and facilities

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

MineLocation / typeCoal · short tonsHours workedViolationsAccident recordsOn-site inspection hours
Granite Valley Quarry2103600 · ActiveRedwood, MNSurface · MSHA: Construction Sand and Gravel——8038.8

LOCATION

Mine location

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

Mine coordinates

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

Violations

8

1 significant & substantial (S&S)

  1. 2025 Q10
  2. 2025 Q24
  3. 2025 Q30
  4. 2025 Q42
  5. 2026 Q10
  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

1,489.00

8 of 8 violations with amounts

  1. 2025 Q1—
  2. 2025 Q2604
  3. 2025 Q3—
  4. 2025 Q4302
  5. 2026 Q1—
  6. 2026 Q2—
  7. 2026 Q3583
  8. 2026 Q4 *—

On-site inspection hours

38.75

4 inspections · 4 with hours

  1. 2025 Q1—
  2. 2025 Q29.50
  3. 2025 Q310.25
  4. 2025 Q411.00
  5. 2026 Q1—
  6. 2026 Q2—
  7. 2026 Q38.00
  8. 2026 Q4 *—
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q100—000—
2025-Q240604.000019.5
2025-Q300—00110.3
2025-Q420302.0000111.0
2026-Q100—000—
2026-Q200—000—
2026-Q321583.000018.0
2026-Q4 *00—000—

Most cited CFR sections

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

Safety activity

  1. inspectionF02FF44
    Granite Valley Quarry · 2103600

    Regular Safety and Health Inspection · 8.0 on-site hours

  2. violation5270206
    Granite Valley Quarry · 2103600

    56.11002 · S&S · $432.00 proposed

  3. violation5270205
    Granite Valley Quarry · 2103600

    56.14101(a)(2) · $151.00 proposed

  4. violation5114216
    Granite Valley Quarry · 2103600

    56.16005 · $151.00 proposed

  5. violation5114215
    Granite Valley Quarry · 2103600

    56.4601 · $151.00 proposed

  6. inspectionF028A92
    Granite Valley Quarry · 2103600

    Regular Safety and Health Inspection · 11.0 on-site hours

  7. inspectionF026752
    Granite Valley Quarry · 2103600

    Spot Inspection · 10.3 on-site hours

  8. inspectionF016E2C
    Granite Valley Quarry · 2103600

    Regular Safety and Health Inspection · 9.5 on-site hours

  9. violation9699895
    Granite Valley Quarry · 2103600

    56.12028 · $151.00 proposed

  10. violation9699894
    Granite Valley Quarry · 2103600

    56.14100(c) · $151.00 proposed

  11. violation9699893
    Granite Valley Quarry · 2103600

    56.20003(a) · $151.00 proposed

  12. violation9699892
    Granite Valley Quarry · 2103600

    56.20001 · $151.00 proposed

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

1 linked operator.

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