# Relationship history for MSHA mine 0101422

Current hierarchy: **Castens Donald L → Castens Equipment Services Inc → Wilburn 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

- **operator_operates_mine:** King Coal Company Inc → Wilburn Prep Plant; 1950-01-01 to 1976-05-12; source msha-controller-operator-history
- **controller_controls_mine:** Raines Charles H → Wilburn Prep Plant; 1950-01-01 to 1976-05-12; source msha-controller-operator-history
- **controller_controls_operator:** Raines Charles H → King Coal Company Inc; 1950-01-01 to 1976-05-12; source msha-controller-operator-history
- **operator_operates_mine:** King Coal Company Inc → Wilburn Prep Plant; 1976-05-13 to 1984-08-20; source msha-controller-operator-history
- **controller_controls_mine:** Pyro Energy Corp → Wilburn Prep Plant; 1976-05-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pyro Energy Corp → King Coal Company Inc; 1976-05-13 to 1984-08-20; source msha-controller-operator-history
- **operator_operates_mine:** Alabama Land & Mineral Corp → Wilburn Prep Plant; 1984-08-21 to 1994-06-16; source msha-controller-operator-history
- **controller_controls_mine:** Costain Group PLC → Wilburn Prep Plant; 1984-08-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Costain Group PLC → Alabama Land & Mineral Corp; 1984-08-21 to 1994-06-16; source msha-controller-operator-history
- **controller_controls_mine:** Castens Donald L → Wilburn Prep Plant; 1993-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Castens Equipment Services Inc → Wilburn Prep Plant; 1994-06-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Castens Donald L → Castens Equipment Services Inc; 1994-06-17 to current/open; source msha-controller-operator-history