# Relationship history for MSHA mine 0101661

Current hierarchy: **Invesco International Corp → Invesco International Corp Of Alabama → No 3 Pit**

- 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:** Invesco International Corp → No 3 Pit; 1976-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Invesco International Corp Of Alabama → No 3 Pit; 1977-02-01 to 1977-04-24; source msha-controller-operator-history
- **controller_controls_operator:** Invesco International Corp → Invesco International Corp Of Alabama; 1977-02-01 to 1977-04-24; source msha-controller-operator-history
- **operator_operates_mine:** Max-Meadow Mining Company Inc → No 3 Pit; 1977-04-25 to 1977-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Kirby Wayne → No 3 Pit; 1977-04-25 to 1977-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Kirby Wayne → Max-Meadow Mining Company Inc; 1977-04-25 to 1977-09-30; source msha-controller-operator-history
- **operator_operates_mine:** Invesco International Corp Of Alabama → No 3 Pit; 1977-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Invesco International Corp → Invesco International Corp Of Alabama; 1977-10-01 to current/open; source msha-controller-operator-history