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 – 2026-10-18. Active records; production reporting is not required.

MineLocation / typeCoal · short tonsHours workedViolationsAccident recordsOn-site inspection hours
ALLIED STONE PLANT #301100135 · Active6/8 quarters reportedRock Island, ILSurface · MSHA: Crushed, Broken Limestone NEC052,9113151.5
Antire Quarry (CS-72)2300026 · Active6/8 quarters reportedJefferson, MOSurface · MSHA: Crushed, Broken Limestone NEC0102,79710172.3
ANTONIA (CS56)2301957 · Active6/8 quarters reportedJefferson, MOSurface · MSHA: Crushed, Broken Limestone NEC033,8503041.5
Butler Hill Granite (CS58)2302431 · Active6/8 quarters reportedSt Francois, MOSurface · MSHA: Dimension Granite036,5721235.8
Central Stone Co (CS-75)1103083 · Active6/8 quarters reportedHancock, ILSurface · MSHA: Crushed, Broken Limestone NEC032,3601130.3
Central Stone Portable Pl#1 (CS48)2301102 · Active6/8 quarters reportedMarion, MOSurface · MSHA: Crushed, Broken Stone NEC022,8361224.3
Central Stone Port Pl #2 (CS49)2301065 · Active6/8 quarters reportedRalls, MOSurface · MSHA: Dimension Limestone035,6571036.0
CLEVELAND QUARRY PLANT #311100131 · Active6/8 quarters reportedHenry, ILSurface · MSHA: Crushed, Broken Limestone NEC051,3073158.8
EDINA PLANT (KC01)2300125 · Active6/8 quarters reportedKnox, MOSurface · MSHA: Crushed, Broken Limestone NEC052,9372028.0
Florence Plant (CS33)1100132 · Active6/8 quarters reportedPike, ILSurface · MSHA: Crushed, Broken Limestone NEC044,0601128.3
Fort Bellefontaine (CS31)2300745 · Active6/8 quarters reportedSt Louis, MOSurface · MSHA: Crushed, Broken Limestone NEC0154,76013897.5
House Springs Quarry (CS-73)2300106 · Active6/8 quarters reportedJefferson, MOSurface · MSHA: Crushed, Broken Limestone NEC022,4623025.5
JEFFERSON BARRACKS (CS-71)2300027 · Active6/8 quarters reportedSt Louis, MOSurface · MSHA: Crushed, Broken Limestone NEC0100,7495260.5
LaGrange Sand & Gravel Pit (CS61)2302494 · Active6/8 quarters reportedLewis, MOSurface · MSHA: Sand, Common020,1823140.0
Leclaire Portable Crusher #11301999 · Active6/8 quarters reportedScott, IASurface · MSHA: Crushed, Broken Limestone NEC019,2931035.3
Leclaire Portable Crusher #21302224 · Active6/8 quarters reportedScott, IASurface · MSHA: Crushed, Broken Limestone NEC020,7057241.3
Midway Stone #451100134 · Active6/8 quarters reportedRock Island, ILSurface · MSHA: Crushed, Broken Limestone NEC043,5533046.8
Moscow Mills Plant CS572302194 · Active6/8 quarters reportedLincoln, MOSurface · MSHA: Crushed, Broken Limestone NEC023,4645140.3
Otter Creek Sand & Gravel (CS-68)1101131 · Active6/8 quarters reportedFulton, ILSurface · MSHA: Construction Sand and Gravel015,8590014.0
Portable Plant #3 (CS50)1100124 · Active6/8 quarters reportedAdams, ILSurface · MSHA: Crushed, Broken Limestone NEC035,7371121.0
Potosi Plant #(CS66)2302423 · Active6/8 quarters reportedWashington, MOSurface · MSHA: Dimension Limestone029,7766061.0
RIVERSTONE PERMANENT WASH PLANT1300094 · Active6/8 quarters reportedScott, IASurface · MSHA: Crushed, Broken Limestone NEC010,3701112.0
ST Francois Quarry (CS54)2301628 · Active6/8 quarters reportedSt Francois, MOSurface · MSHA: Crushed, Broken Limestone NEC036,3166142.8
Trautman Quarry (CS-74)2300539 · Active6/8 quarters reportedJefferson, MOSurface · MSHA: Crushed, Broken Limestone NEC029,4482034.0
Troy Grove Stone Quarry (MC46)1102864 · Active6/8 quarters reportedLa Salle, ILSurface · MSHA: Crushed, Broken Limestone NEC045,6416140.0
VALLEY PLANT #71100136 · Active6/8 quarters reportedWarren, ILSurface · MSHA: Crushed, Broken Limestone NEC026,8582036.0
Vermilion Plant (MC47)1103208 · Active6/8 quarters reportedLa Salle, ILSurface · MSHA: Crushed, Broken Limestone NEC032,74719180.0

LOCATION

Portfolio map

27 of 27 mines with usable MSHA coordinates. Select a marker to open a mine.

Mine coordinates

2025-01-01 – 2026-10-18Applies 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. inspectionF001499
    Troy Grove Stone Quarry (MC46) · 1102864

    Regular Safety and Health Inspection · 15.0 on-site hours

  2. violation5040843
    ST Francois Quarry (CS54) · 2301628

    56.14107(a) · $151.00 proposed

  3. violation5040842
    ST Francois Quarry (CS54) · 2301628

    56.14112(a)(1) · $151.00 proposed

  4. inspectionF00B737
    ST Francois Quarry (CS54) · 2301628

    Regular Safety and Health Inspection · 9.8 on-site hours

  5. inspectionF00B736
    Butler Hill Granite (CS58) · 2302431

    Regular Safety and Health Inspection · 10.0 on-site hours

  6. inspectionF015C3C
    Potosi Plant #(CS66) · 2302423

    Regular Safety and Health Inspection · 4.5 on-site hours

  7. violation5040142
    Potosi Plant #(CS66) · 2302423

    56.16005 · $151.00 proposed

  8. inspectionF012356
    Trautman Quarry (CS-74) · 2300539

    Regular Safety and Health Inspection · 11.0 on-site hours

  9. violation9781582
    Trautman Quarry (CS-74) · 2300539

    56.9300(a) · $151.00 proposed

  10. violation9781580
    ANTONIA (CS56) · 2301957

    56.14100(b) · $465.00 proposed

  11. inspectionF012355
    ANTONIA (CS56) · 2301957

    Regular Safety and Health Inspection · 16.0 on-site hours

  12. violation9781575
    JEFFERSON BARRACKS (CS-71) · 2300027

    56.14107(a) · $151.00 proposed

  13. violation9781574
    JEFFERSON BARRACKS (CS-71) · 2300027

    56.14107(a) · $151.00 proposed

  14. violation9781572
    JEFFERSON BARRACKS (CS-71) · 2300027

    56.14205 · $151.00 proposed

  15. inspectionF012351
    JEFFERSON BARRACKS (CS-71) · 2300027

    Regular Safety and Health Inspection · 21.5 on-site hours

  16. accident220251180021
    Florence Plant (CS33) · 1100132

    HANDTOOLS (NONPOWERED) · NO DYS AWY FRM WRK,NO RSTR ACT

    Accident narrative

    Employee utilized leverage to free a stuck part when the applied force caused the tooling to come into contact with their face.

  17. inspection7012276
    Florence Plant (CS33) · 1100132

    Regular Safety and Health Inspection · 6.8 on-site hours

  18. inspectionF01B18D
    Leclaire Portable Crusher #1 · 1301999

    Regular Safety and Health Inspection · 9.5 on-site hours

  19. inspectionF011860
    LaGrange Sand & Gravel Pit (CS61) · 2302494

    Regular Safety and Health Inspection · 8.0 on-site hours

  20. violation9781953
    LaGrange Sand & Gravel Pit (CS61) · 2302494

    56.15001 · $151.00 proposed

  21. inspection7012274
    Portable Plant #3 (CS50) · 1100124

    Compliance Follow-up Inspection · 1.3 on-site hours

  22. inspectionF01B18C
    RIVERSTONE PERMANENT WASH PLANT · 1300094

    Regular Safety and Health Inspection · 3.0 on-site hours

  23. inspectionF01185F
    EDINA PLANT (KC01) · 2300125

    Regular Safety and Health Inspection · 8.0 on-site hours

  24. inspectionF01B18B
    Leclaire Portable Crusher #2 · 1302224

    Regular Safety and Health Inspection · 11.0 on-site hours

  25. accident220251080002
    Fort Bellefontaine (CS31) · 2300745

    HANDTOOLS (NONPOWERED) · NO DYS AWY FRM WRK,NO RSTR ACT

    Accident narrative

    Employee alleges EE was cutting top of belt on a conveyor with a knife and the knife slipped and cut EE's left forearm/wrist.

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

4 linked operators.

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