# Relationship history for MSHA mine 2700546

Current hierarchy: **Peckham Industries Inc → Peckham Materials Corp → A.B. Mobile**

- 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:** Peckham Industries Inc → A.B. Mobile; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Allen  Bouthillier → A.B. Mobile; 2010-03-05 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** AB Excavating Inc. → A.B. Mobile; 2023-08-03 to 2025-06-02; source msha-controller-operator-history
- **controller_controls_operator:** Allen  Bouthillier → AB Excavating Inc.; 2023-08-03 to 2025-06-02; source msha-controller-operator-history
- **operator_operates_mine:** Peckham Materials Corp → A.B. Mobile; 2025-06-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peckham Industries Inc → Peckham Materials Corp; 2025-06-03 to current/open; source msha-controller-operator-history