ACTIVE / CONTROLLER PORTFOLIO

Riverstone Group

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

MSHA CONTROLLER IDM00233

MINE PORTFOLIO

27 of 27 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
ALLIED STONE PLANT #301100135 · ActiveRock Island, ILSurface · MSHA: Crushed, Broken Limestone NEC——3151.5
Antire Quarry (CS-72)2300026 · ActiveJefferson, MOSurface · MSHA: Crushed, Broken Limestone NEC——10172.3
ANTONIA (CS56)2301957 · ActiveJefferson, MOSurface · MSHA: Crushed, Broken Limestone NEC——3041.5
Butler Hill Granite (CS58)2302431 · ActiveSt Francois, MOSurface · MSHA: Dimension Granite——1235.8
Central Stone Co (CS-75)1103083 · ActiveHancock, ILSurface · MSHA: Crushed, Broken Limestone NEC——1130.3
Central Stone Portable Pl#1 (CS48)2301102 · ActiveMarion, MOSurface · MSHA: Crushed, Broken Stone NEC——1224.3
Central Stone Port Pl #2 (CS49)2301065 · ActiveRalls, MOSurface · MSHA: Dimension Limestone——1036.0
CLEVELAND QUARRY PLANT #311100131 · ActiveHenry, ILSurface · MSHA: Crushed, Broken Limestone NEC——3158.8
EDINA PLANT (KC01)2300125 · ActiveKnox, MOSurface · MSHA: Crushed, Broken Limestone NEC——2028.0
Florence Plant (CS33)1100132 · ActivePike, ILSurface · MSHA: Crushed, Broken Limestone NEC——1128.3
Fort Bellefontaine (CS31)2300745 · ActiveSt Louis, MOSurface · MSHA: Crushed, Broken Limestone NEC——13897.5
House Springs Quarry (CS-73)2300106 · ActiveJefferson, MOSurface · MSHA: Crushed, Broken Limestone NEC——3025.5
JEFFERSON BARRACKS (CS-71)2300027 · ActiveSt Louis, MOSurface · MSHA: Crushed, Broken Limestone NEC——5260.5
LaGrange Sand & Gravel Pit (CS61)2302494 · ActiveLewis, MOSurface · MSHA: Sand, Common——3140.0
Leclaire Portable Crusher #11301999 · ActiveScott, IASurface · MSHA: Crushed, Broken Limestone NEC——1035.3
Leclaire Portable Crusher #21302224 · ActiveScott, IASurface · MSHA: Crushed, Broken Limestone NEC——7241.3
Midway Stone #451100134 · ActiveRock Island, ILSurface · MSHA: Crushed, Broken Limestone NEC——3046.8
Moscow Mills Plant CS572302194 · ActiveLincoln, MOSurface · MSHA: Crushed, Broken Limestone NEC——5140.3
Otter Creek Sand & Gravel (CS-68)1101131 · ActiveFulton, ILSurface · MSHA: Construction Sand and Gravel——0014.0
Portable Plant #3 (CS50)1100124 · ActiveAdams, ILSurface · MSHA: Crushed, Broken Limestone NEC——1121.0
Potosi Plant #(CS66)2302423 · ActiveWashington, MOSurface · MSHA: Dimension Limestone——6061.0
RIVERSTONE PERMANENT WASH PLANT1300094 · ActiveScott, IASurface · MSHA: Crushed, Broken Limestone NEC——1112.0
ST Francois Quarry (CS54)2301628 · ActiveSt Francois, MOSurface · MSHA: Crushed, Broken Limestone NEC——6142.8
Trautman Quarry (CS-74)2300539 · ActiveJefferson, MOSurface · MSHA: Crushed, Broken Limestone NEC——2034.0
Troy Grove Stone Quarry (MC46)1102864 · ActiveLa Salle, ILSurface · MSHA: Crushed, Broken Limestone NEC——6140.0
VALLEY PLANT #71100136 · ActiveWarren, ILSurface · MSHA: Crushed, Broken Limestone NEC——2036.0
Vermilion Plant (MC47)1103208 · ActiveLa Salle, ILSurface · MSHA: Crushed, Broken Limestone NEC——19180.0

LOCATION

Portfolio map

27 of 27 mines 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

109

8 significant & substantial (S&S)

  1. 2025 Q111
  2. 2025 Q212
  3. 2025 Q318
  4. 2025 Q431
  5. 2026 Q16
  6. 2026 Q214
  7. 2026 Q317
  8. 2026 Q4 *0

Accident records

28

1 records classified as fatality

  1. 2025 Q14
  2. 2025 Q23
  3. 2025 Q35
  4. 2025 Q42
  5. 2026 Q15
  6. 2026 Q25
  7. 2026 Q34
  8. 2026 Q4 *0

Proposed penalties · USD

17,381.00

102 of 109 violations with amounts

  1. 2025 Q12,938
  2. 2025 Q22,126
  3. 2025 Q32,732
  4. 2025 Q44,918
  5. 2026 Q1906
  6. 2026 Q22,100
  7. 2026 Q31,661
  8. 2026 Q4 *—

On-site inspection hours

1,134.25

118 inspections · 118 with hours

  1. 2025 Q180.75
  2. 2025 Q2166.75
  3. 2025 Q3177.00
  4. 2025 Q4252.75
  5. 2026 Q1144.00
  6. 2026 Q2146.25
  7. 2026 Q3166.75
  8. 2026 Q4 *—
Quarterly safety data
QuarterViolationsS&SProposed USDAccident recordsFatality recordsInspectionsOn-site hours
2025-Q11122,938.00401180.8
2025-Q21202,126.003017166.8
2025-Q31802,732.005022177.0
2025-Q43144,918.002018252.8
2026-Q160906.005019144.0
2026-Q21412,100.005115146.3
2026-Q31711,661.004016166.8
2026-Q4 *00—000—

Most cited CFR sections

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

Safety activity

  1. violation5118961
    Leclaire Portable Crusher #2 · 1302224

    46.9(c)(3) · $151.00 proposed

  2. violation5118960
    Leclaire Portable Crusher #2 · 1302224

    56.23002(a) · $151.00 proposed

  3. violation5118959
    Leclaire Portable Crusher #2 · 1302224

    56.4201(b) · $151.00 proposed

  4. inspectionF038626
    JEFFERSON BARRACKS (CS-71) · 2300027

    Regular Safety and Health Inspection · 12.5 on-site hours

  5. violation5042364
    Antire Quarry (CS-72) · 2300026

    46.6 · $151.00 proposed

  6. violation5042363
    Antire Quarry (CS-72) · 2300026

    56.14100(a) · $151.00 proposed

  7. violation5042362
    Antire Quarry (CS-72) · 2300026

    56.13015 · $151.00 proposed

  8. violation5042361
    Antire Quarry (CS-72) · 2300026

    56.20003(a) · $151.00 proposed

  9. violation5042360
    Antire Quarry (CS-72) · 2300026

    56.14107(a) · $151.00 proposed

  10. accident220261940022
    ST Francois Quarry (CS54) · 2301628

    MACHINERY · DAYS AWAY FROM WORK ONLY

    Accident narrative

    employee alleges the auto darkening on welding hood did not engage and their eyes sustained minor flash burn

  11. inspectionF038623
    Antire Quarry (CS-72) · 2300026

    Regular Safety and Health Inspection · 17.5 on-site hours

  12. inspectionF038622
    Trautman Quarry (CS-74) · 2300539

    Regular Safety and Health Inspection · 8.5 on-site hours

  13. accident220261900013
    Leclaire Portable Crusher #2 · 1302224

    POWERED HAULAGE · FATALITY

    Accident narrative

    Contractor equipment transporter was in process of loading and securing front end loader to trailer for off-site transit. Contractor employee reached under the loader to grad a chain on trailer and was caught between the loader and trailer.

  14. inspectionF037BD5
    Leclaire Portable Crusher #2 · 1302224

    Fatal Accident Investigation · 19.0 on-site hours

  15. violation5118941
    Leclaire Portable Crusher #2 · 1302224

    Description not reported

  16. inspectionF037BD4
    RIVERSTONE PERMANENT WASH PLANT · 1300094

    Regular Safety and Health Inspection · 5.0 on-site hours

  17. violation5118940
    RIVERSTONE PERMANENT WASH PLANT · 1300094

    56.14107(a) · $151.00 proposed

  18. inspectionF03750D
    Potosi Plant #(CS66) · 2302423

    Regular Safety and Health Inspection · 8.5 on-site hours

  19. violation5040935
    Potosi Plant #(CS66) · 2302423

    56.14100(b) · $151.00 proposed

  20. violation5040933
    Moscow Mills Plant CS57 · 2302194

    56.14206(b) · $151.00 proposed

  21. inspectionF03750C
    Moscow Mills Plant CS57 · 2302194

    Regular Safety and Health Inspection · 5.5 on-site hours

  22. inspectionF0413ED
    Vermilion Plant (MC47) · 1103208

    Regular Safety and Health Inspection · 18.8 on-site hours

  23. accident220261610004
    Vermilion Plant (MC47) · 1103208

    HANDLING OF MATERIALS · DAYS AWAY FROM WORK ONLY

    Accident narrative

    Employee alleges EE was changing fork belt and operator moved forks back and belt was stuck and released resulting in hand abrasion

  24. accident220261610005
    Central Stone Portable Pl#1 (CS48) · 2301102

    SLIP OR FALL OF PERSON · DAYS AWAY FROM WORK ONLY

    Accident narrative

    Employee alleges EE dislodged rock from conveyer and when rock gave way, EE fell to ground and strained ankle

  25. inspectionF03B8FC
    EDINA PLANT (KC01) · 2300125

    Regular Safety and Health Inspection · 9.0 on-site hours

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

4 linked operators.

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