# Relationship history for MSHA mine 3000861

Current hierarchy: **Fairchild Brothers Holding Company → I A Construction Corp → E F Lippert & Company 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Colas S A → E F Lippert & Company Inc; 1950-01-01 to 2026-02-19; source msha-controller-operator-history
- **operator_operates_mine:** E F Lippert & Company Inc → E F Lippert & Company Inc; 1950-01-01 to 1990-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Bernardine  Olevnik et al → E F Lippert & Company Inc; 1950-01-01 to 1990-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Bernardine  Olevnik et al → E F Lippert & Company Inc; 1950-01-01 to 1990-06-30; source msha-controller-operator-history
- **operator_operates_mine:** E F Lippert & Company Inc → E F Lippert & Company Inc; 1990-07-01 to 2000-01-23; source msha-controller-operator-history
- **controller_controls_mine:** Mary C  Stayer et al → E F Lippert & Company Inc; 1990-07-01 to 2000-01-23; source msha-controller-operator-history
- **controller_controls_operator:** Mary C  Stayer et al → E F Lippert & Company Inc; 1990-07-01 to 2000-01-23; source msha-controller-operator-history
- **operator_operates_mine:** I A Construction Corp → E F Lippert & Company Inc; 2000-01-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Colas S A → I A Construction Corp; 2000-01-24 to 2026-02-19; source msha-controller-operator-history
- **controller_controls_mine:** Fairchild Brothers Holding Company → E F Lippert & Company Inc; 2026-02-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fairchild Brothers Holding Company → I A Construction Corp; 2026-02-20 to current/open; source msha-controller-operator-history