# Relationship history for MSHA mine 0103426

Current hierarchy: **Sandton Credit Solutions Master Fund IV, LP → Prospect Mining & Development Co., LLC → Carbon Hill Prep Plant**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Ronald S  Bryant et al → Carbon Hill Prep Plant; 1993-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Warrior Investment Co., Inc. → Carbon Hill Prep Plant; 2010-02-25 to 2016-12-18; source msha-controller-operator-history
- **controller_controls_operator:** Ronald S  Bryant et al → Warrior Investment Co., Inc.; 2010-02-25 to 2016-12-18; source msha-controller-operator-history
- **operator_operates_mine:** Prospect Mining & Development Co., LLC → Carbon Hill Prep Plant; 2016-12-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Sandton Credit Solutions Master Fund IV, LP → Carbon Hill Prep Plant; 2016-12-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sandton Credit Solutions Master Fund IV, LP → Prospect Mining & Development Co., LLC; 2016-12-19 to current/open; source msha-controller-operator-history