# Relationship history for MSHA mine 4609189

Current hierarchy: **Peabody Energy Corporation → Hillside Mining Company → Casey Creek No. 1 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

- **controller_controls_mine:** Peabody Energy Corporation → Casey Creek No. 1 Surface Mine; 2001-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hillside Mining Company → Casey Creek No. 1 Surface Mine; 2006-10-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peabody Energy Corporation → Hillside Mining Company; 2006-10-10 to current/open; source msha-controller-operator-history