# Relationship history for MSHA mine 2300106

Current hierarchy: **Riverstone Group → Central Stone Company → House Springs Quarry (CS-73)**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Riverstone Group → House Springs Quarry (CS-73); 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Des Peres Quarry Inc → House Springs Quarry (CS-73); 1950-01-01 to 1988-06-12; source msha-controller-operator-history
- **controller_controls_mine:** Jack  Janssen → House Springs Quarry (CS-73); 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jack  Janssen → Des Peres Quarry Inc; 1950-01-01 to 1988-06-12; source msha-controller-operator-history
- **operator_operates_mine:** House Springs Quarry & Materials Inc → House Springs Quarry (CS-73); 1988-06-13 to 2012-12-17; source msha-controller-operator-history
- **controller_controls_mine:** Janssen Bill M → House Springs Quarry (CS-73); 1988-06-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Janssen Bill M → House Springs Quarry & Materials Inc; 1988-06-13 to 2012-12-17; source msha-controller-operator-history
- **controller_controls_mine:** Riverstone Group → House Springs Quarry (CS-73); 1990-05-01 to 2012-01-29; source msha-controller-operator-history
- **controller_controls_mine:** Riverstone Group et al → House Springs Quarry (CS-73); 2012-01-30 to 2022-10-19; source msha-controller-operator-history
- **operator_operates_mine:** Bussen Quarries, Inc. → House Springs Quarry (CS-73); 2012-12-18 to 2021-12-29; source msha-controller-operator-history
- **controller_controls_operator:** Riverstone Group et al → Bussen Quarries, Inc.; 2012-12-18 to 2021-12-29; source msha-controller-operator-history
- **controller_controls_operator:** Bussen Quarries Inc et al → Bussen Quarries, Inc.; 2012-12-18 to 2021-12-29; source msha-controller-operator-history
- **controller_controls_operator:** Riverstone Group → Bussen Quarries, Inc.; 2012-12-18 to 2012-01-29; source msha-controller-operator-history
- **operator_operates_mine:** Central Stone Company → House Springs Quarry (CS-73); 2021-12-30 to 2022-10-19; source msha-controller-operator-history
- **controller_controls_operator:** Riverstone Group → Central Stone Company; 2021-12-30 to 2022-10-19; source msha-controller-operator-history
- **operator_operates_mine:** Bussen Quarries, Inc. → House Springs Quarry (CS-73); 2022-10-20 to 2024-07-15; source msha-controller-operator-history
- **controller_controls_operator:** Riverstone Group et al → Bussen Quarries, Inc.; 2022-10-20 to 2022-10-19; source msha-controller-operator-history
- **controller_controls_operator:** Bussen Quarries Inc et al → Bussen Quarries, Inc.; 2022-10-20 to 2022-10-19; source msha-controller-operator-history
- **controller_controls_operator:** Riverstone Group → Bussen Quarries, Inc.; 2022-10-20 to 2012-01-29; source msha-controller-operator-history
- **controller_controls_mine:** Riverstone Group → House Springs Quarry (CS-73); 2022-10-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Riverstone Group → Bussen Quarries, Inc.; 2022-10-20 to 2021-12-29; source msha-controller-operator-history
- **controller_controls_operator:** Riverstone Group → Bussen Quarries, Inc.; 2022-10-20 to 2024-07-15; source msha-controller-operator-history
- **operator_operates_mine:** Central Stone Company → House Springs Quarry (CS-73); 2024-07-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Riverstone Group → Central Stone Company; 2024-07-16 to current/open; source msha-controller-operator-history