# Relationship history for MSHA mine 1103054

Current hierarchy: **Peabody Energy Corporation → Big Ridge Inc → Willow Lake Portal**

- 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:** SCC Holding LLC et al → Willow Lake Portal; 1997-10-31 to 2000-04-23; source msha-controller-operator-history
- **operator_operates_mine:** Sugar Camp Coal Llc → Willow Lake Portal; 2000-01-01 to 2000-04-23; source msha-controller-operator-history
- **controller_controls_operator:** SCC Holding LLC et al → Sugar Camp Coal Llc; 2000-01-01 to 2000-04-23; source msha-controller-operator-history
- **operator_operates_mine:** Big Ridge Inc → Willow Lake Portal; 2000-04-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Daniel W  Bailey et al → Willow Lake Portal; 2001-07-25 to 2002-03-05; source msha-controller-operator-history
- **controller_controls_operator:** Daniel W  Bailey et al → Big Ridge Inc; 2001-07-25 to 2002-03-05; source msha-controller-operator-history
- **controller_controls_mine:** MDM HOLDING INCORPORATED → Willow Lake Portal; 2002-03-06 to 2002-10-08; source msha-controller-operator-history
- **controller_controls_operator:** MDM HOLDING INCORPORATED → Big Ridge Inc; 2002-03-06 to 2002-10-08; source msha-controller-operator-history
- **controller_controls_mine:** Peabody Energy Corporation → Willow Lake Portal; 2002-10-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peabody Energy Corporation → Big Ridge Inc; 2002-10-09 to current/open; source msha-controller-operator-history