# Relationship history for MSHA mine 0102952

Current hierarchy: **Allegiance Coal LTD → Black Warrior Minerals Inc → T & L Mine**

- 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:** Roger W  Perry et al → T & L Mine; 1985-10-01 to 2016-10-05; source msha-controller-operator-history
- **operator_operates_mine:** Black Warrior Minerals Inc → T & L Mine; 1992-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roger W  Perry et al → Black Warrior Minerals Inc; 1992-05-01 to 2016-10-05; source msha-controller-operator-history
- **controller_controls_operator:** Rance  Perry et al → Black Warrior Minerals Inc; 1992-05-01 to 2016-10-05; source msha-controller-operator-history
- **controller_controls_operator:** Leah  Perry-Haynie et al → Black Warrior Minerals Inc; 1992-05-01 to 2016-10-05; source msha-controller-operator-history
- **controller_controls_mine:** Rance D Perry et al → T & L Mine; 2016-10-06 to 2022-05-17; source msha-controller-operator-history
- **controller_controls_operator:** Rance D Perry et al → Black Warrior Minerals Inc; 2016-10-06 to 2022-05-17; source msha-controller-operator-history
- **controller_controls_operator:** Summer L Perry et al → Black Warrior Minerals Inc; 2016-10-06 to 2022-05-17; source msha-controller-operator-history
- **controller_controls_operator:** Leah M Perry et al → Black Warrior Minerals Inc; 2016-10-06 to 2022-05-17; source msha-controller-operator-history
- **controller_controls_operator:** Roger W Perry et al → Black Warrior Minerals Inc; 2016-10-06 to 2022-05-17; source msha-controller-operator-history
- **controller_controls_mine:** Rance D Perry → T & L Mine; 2022-05-18 to 2022-09-14; source msha-controller-operator-history
- **controller_controls_operator:** Rance D Perry → Black Warrior Minerals Inc; 2022-05-18 to 2022-09-14; source msha-controller-operator-history
- **controller_controls_mine:** Allegiance Coal LTD → T & L Mine; 2022-09-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Allegiance Coal LTD → Black Warrior Minerals Inc; 2022-09-15 to current/open; source msha-controller-operator-history