# Relationship history for MSHA mine 1101065

Current hierarchy: **Truman L Flatt III → Buckhart Sand & Gravel Co Inc → Buckhart Sand & Gravel Co Inc**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Buckhart Sand & Gravel Co Inc → Buckhart Sand & Gravel Co Inc; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Christine L  Flatt → Buckhart Sand & Gravel Co Inc; 1950-01-01 to 2010-07-13; source msha-controller-operator-history
- **controller_controls_operator:** Christine L  Flatt → Buckhart Sand & Gravel Co Inc; 1950-01-01 to 2010-07-13; source msha-controller-operator-history
- **controller_controls_mine:** Truman L  Flatt III et al → Buckhart Sand & Gravel Co Inc; 2019-05-16 to 2023-02-07; source msha-controller-operator-history
- **controller_controls_operator:** Truman L  Flatt III et al → Buckhart Sand & Gravel Co Inc; 2019-05-16 to 2023-02-07; source msha-controller-operator-history
- **controller_controls_operator:** Bryant C  Flatt Jr et al → Buckhart Sand & Gravel Co Inc; 2019-05-16 to 2023-02-07; source msha-controller-operator-history
- **controller_controls_mine:** Truman L Flatt III → Buckhart Sand & Gravel Co Inc; 2023-02-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Truman L Flatt III → Buckhart Sand & Gravel Co Inc; 2023-02-08 to current/open; source msha-controller-operator-history