# Relationship history for MSHA mine 4606715

Current hierarchy: **Metinvest B V → Carter Roag Coal Company → Mine 1-A**

- 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 → Mine 1-A; 1975-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Carter-Roag Coal Company → Mine 1-A; 1983-11-01 to 2004-10-21; source msha-controller-operator-history
- **controller_controls_operator:** Marquard & Bahls Ag → Carter-Roag Coal Company; 1983-11-01 to 2004-10-21; source msha-controller-operator-history
- **controller_controls_mine:** Clyde H  McComas et al → Mine 1-A; 2001-11-27 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Carter Roag Coal Company → Mine 1-A; 2004-10-22 to 2005-10-11; source msha-controller-operator-history
- **controller_controls_mine:** United  Company → Mine 1-A; 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 2005-10-11; source msha-controller-operator-history
- **operator_operates_mine:** Titan Mining, Inc. → Mine 1-A; 2005-10-12 to 2005-11-20; source msha-controller-operator-history
- **controller_controls_operator:** Clyde H  McComas et al → Titan Mining, Inc.; 2005-10-12 to 2005-11-20; source msha-controller-operator-history
- **controller_controls_operator:** Ollie  Burns et al → Titan Mining, Inc.; 2005-10-12 to 2005-11-20; source msha-controller-operator-history
- **operator_operates_mine:** Carter Roag Coal Company → Mine 1-A; 2005-11-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** United  Company → Carter Roag Coal Company; 2005-11-21 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_mine:** Metinvest B V → Mine 1-A; 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 2005-10-11; 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