# Relationship history for MSHA mine 4605602

Current hierarchy: **Mounts Jimmy-Jerry Cline → Kristi Ann Coal Inc → No 2**

- 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:** Pittston Company → No 2; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Buffalo Mining Company → No 2; 1977-08-01 to 1981-10-13; source msha-controller-operator-history
- **controller_controls_operator:** Pittston Company → Buffalo Mining Company; 1977-08-01 to 1981-10-13; source msha-controller-operator-history
- **controller_controls_mine:** Mounts Jimmy-Jerry Cline Et Al → No 2; 1981-09-24 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kristi Ann Coal Inc → No 2; 1981-10-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mounts Jimmy-Jerry Cline Et Al → Kristi Ann Coal Inc; 1981-10-14 to current/open; source msha-controller-operator-history