# Relationship history for MSHA mine 4606449

Current hierarchy: **Henry Paul  Kizer → Halfway Inc → No 1 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

- **operator_operates_mine:** Halfway Inc → No 1 Mine; 1981-11-01 to 1983-05-11; source msha-controller-operator-history
- **controller_controls_mine:** Campbell Patsy A → No 1 Mine; 1981-11-01 to 1983-05-11; source msha-controller-operator-history
- **controller_controls_operator:** Campbell Patsy A → Halfway Inc; 1981-11-01 to 1983-05-11; source msha-controller-operator-history
- **operator_operates_mine:** Halfway Inc → No 1 Mine; 1983-05-12 to 1984-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Henry Paul  Kizer et al → No 1 Mine; 1983-05-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Henry Paul  Kizer et al → Halfway Inc; 1983-05-12 to 1984-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Cook William Larry → No 1 Mine; 1984-06-06 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Pinnacle Mining Inc → No 1 Mine; 1984-10-01 to 1985-05-21; source msha-controller-operator-history
- **controller_controls_operator:** Cook William Larry → Pinnacle Mining Inc; 1984-10-01 to 1985-05-21; source msha-controller-operator-history
- **operator_operates_mine:** Halfway Inc → No 1 Mine; 1985-05-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Henry Paul  Kizer et al → Halfway Inc; 1985-05-22 to current/open; source msha-controller-operator-history