# Relationship history for MSHA mine 0201334

Current hierarchy: **Fayette  McFarland; Sidney  Hullinger → Mc Farland & Hullinger → Black Hills**

- 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:** Fayette  McFarland et al → Black Hills; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Andrew J  Gilbert III → Black Hills; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Monty P  Nichols → Black Hills; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** A J Gilbert Construction Company → Black Hills; 1979-07-01 to 1989-05-22; source msha-controller-operator-history
- **controller_controls_operator:** Andrew J  Gilbert III → A J Gilbert Construction Company; 1979-07-01 to 1989-05-22; source msha-controller-operator-history
- **operator_operates_mine:** Triple Nichol Inc → Black Hills; 1989-05-23 to 1990-03-13; source msha-controller-operator-history
- **controller_controls_operator:** Monty P  Nichols → Triple Nichol Inc; 1989-05-23 to 1990-03-13; source msha-controller-operator-history
- **operator_operates_mine:** Mc Farland & Hullinger → Black Hills; 1990-03-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fayette  McFarland et al → Mc Farland & Hullinger; 1990-03-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sidney  Hullinger et al → Mc Farland & Hullinger; 1990-03-14 to current/open; source msha-controller-operator-history