# Relationship history for MSHA mine 4608656

Current hierarchy: **Metinvest B V → Carter Roag Coal Company → Morgan Camp 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:** Marquard & Bahls Ag → Morgan Camp Mine; 1975-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Carter-Roag Coal Company → Morgan Camp Mine; 1997-08-01 to 2004-10-21; source msha-controller-operator-history
- **controller_controls_operator:** Marquard & Bahls Ag → Carter-Roag Coal Company; 1997-08-01 to 2004-10-21; source msha-controller-operator-history
- **operator_operates_mine:** Carter Roag Coal Company → Morgan Camp Mine; 2004-10-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** United  Company → Morgan Camp Mine; 2004-10-22 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_operator:** United  Company → Carter Roag Coal Company; 2004-10-22 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_mine:** Metinvest B V → Morgan Camp Mine; 2009-04-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Metinvest B V → Carter Roag Coal Company; 2009-04-30 to current/open; source msha-controller-operator-history