# Relationship history for MSHA mine 0102669

Current hierarchy: **Shubert James → Brookwood Sand & Gravel Inc → Howton**

- 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:** John R (Reed)  Marine Jr → Howton; 1982-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jaime S M  French → Howton; 1982-11-23 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Al-Tenn Coal Company Inc → Howton; 1986-03-01 to 1987-08-12; source msha-controller-operator-history
- **controller_controls_operator:** John R (Reed)  Marine Jr → Al-Tenn Coal Company Inc; 1986-03-01 to 1987-08-12; source msha-controller-operator-history
- **operator_operates_mine:** Dunn Construction Company Inc → Howton; 1987-08-13 to 1992-06-15; source msha-controller-operator-history
- **controller_controls_operator:** Jaime S M  French → Dunn Construction Company Inc; 1987-08-13 to 1992-06-15; source msha-controller-operator-history
- **operator_operates_mine:** Brookwood Sand & Gravel Inc → Howton; 1992-06-16 to 1994-06-01; source msha-controller-operator-history
- **controller_controls_mine:** Mills Charles E → Howton; 1992-06-16 to 1994-06-01; source msha-controller-operator-history
- **controller_controls_operator:** Mills Charles E → Brookwood Sand & Gravel Inc; 1992-06-16 to 1994-06-01; source msha-controller-operator-history
- **operator_operates_mine:** Brookwood Sand & Gravel Inc → Howton; 1994-06-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Shubert James → Howton; 1994-06-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Shubert James → Brookwood Sand & Gravel Inc; 1994-06-02 to current/open; source msha-controller-operator-history