# Relationship history for MSHA mine 4608895

Current hierarchy: **Peabody Energy Corporation → HMC Mining LLC → North Surface 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:** Hillside Mining Company → North Surface Mine; 2001-04-01 to 2004-12-15; source msha-controller-operator-history
- **controller_controls_mine:** Peabody Energy Corporation → North Surface Mine; 2001-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peabody Energy Corporation → Hillside Mining Company; 2001-04-01 to 2004-12-15; source msha-controller-operator-history
- **operator_operates_mine:** Highwall Mining Services Company → North Surface Mine; 2004-12-16 to 2004-12-21; source msha-controller-operator-history
- **controller_controls_mine:** Peabody Energy Corporation → North Surface Mine; 2004-12-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peabody Energy Corporation → Highwall Mining Services Company; 2004-12-16 to 2004-12-21; source msha-controller-operator-history
- **operator_operates_mine:** HMC Mining LLC → North Surface Mine; 2004-12-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Peabody Energy Corporation → North Surface Mine; 2004-12-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peabody Energy Corporation → HMC Mining LLC; 2004-12-22 to current/open; source msha-controller-operator-history