# Relationship history for MSHA mine 1511111

Current hierarchy: **Lonnie  Strunk → Wan-Crys Coal Company 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

- **controller_controls_mine:** Paramount Drilling Corp → No 1 Mine; 1976-05-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** King Coal Company → No 1 Mine; 1978-03-01 to 1979-01-28; source msha-controller-operator-history
- **controller_controls_operator:** Paramount Drilling Corp → King Coal Company; 1978-03-01 to 1979-01-28; source msha-controller-operator-history
- **controller_controls_mine:** William N  Rich → No 1 Mine; 1978-12-28 to 1980-07-29; source msha-controller-operator-history
- **operator_operates_mine:** Zephyr Mining Company → No 1 Mine; 1979-01-29 to 1980-07-29; source msha-controller-operator-history
- **controller_controls_operator:** William N  Rich → Zephyr Mining Company; 1979-01-29 to 1980-07-29; source msha-controller-operator-history
- **operator_operates_mine:** King Coal Company → No 1 Mine; 1980-07-30 to 1982-01-11; source msha-controller-operator-history
- **controller_controls_operator:** Paramount Drilling Corp → King Coal Company; 1980-07-30 to 1982-01-11; source msha-controller-operator-history
- **operator_operates_mine:** Wan-Crys Coal Company Inc → No 1 Mine; 1982-01-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lonnie  Strunk → No 1 Mine; 1982-01-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lonnie  Strunk → Wan-Crys Coal Company Inc; 1982-01-12 to current/open; source msha-controller-operator-history