# Relationship history for MSHA mine 4605004

Current hierarchy: **Dunleavy John P → Hawthorne Mining Corp → Clifftop Cannon No 1 Surface**

- 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:** Mc Clung Harold C → Clifftop Cannon No 1 Surface; 1974-04-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dunleavy John P Et Al → Clifftop Cannon No 1 Surface; 1975-02-07 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mc Clung Coal Company → Clifftop Cannon No 1 Surface; 1976-01-09 to 1977-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Mc Clung Harold C → Mc Clung Coal Company; 1976-01-09 to 1977-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Hawthorne Mining Corp → Clifftop Cannon No 1 Surface; 1977-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dunleavy John P Et Al → Hawthorne Mining Corp; 1977-03-01 to current/open; source msha-controller-operator-history