# Relationship history for MSHA mine 4406726

Current hierarchy: **Metinvest B V → Banner Blue Coal Company → No 3**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Gary A  Horn → No 3; 1991-07-22 to 2005-10-19; source msha-controller-operator-history
- **controller_controls_mine:** Jerry W  Maggard → No 3; 1992-08-17 to 1995-03-07; source msha-controller-operator-history
- **operator_operates_mine:** Blackstone Mining Inc → No 3; 1992-12-01 to 1995-03-07; source msha-controller-operator-history
- **controller_controls_operator:** Jerry W  Maggard → Blackstone Mining Inc; 1992-12-01 to 1995-03-07; source msha-controller-operator-history
- **operator_operates_mine:** Banner Blue Coal Company → No 3; 1995-03-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gary A  Horn → Banner Blue Coal Company; 1995-03-08 to 2005-10-19; source msha-controller-operator-history
- **controller_controls_mine:** Sam  Blankenship → No 3; 2005-10-20 to 2006-01-22; source msha-controller-operator-history
- **controller_controls_operator:** Sam  Blankenship → Banner Blue Coal Company; 2005-10-20 to 2006-01-22; source msha-controller-operator-history
- **controller_controls_mine:** United  Company → No 3; 2006-01-23 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_operator:** United  Company → Banner Blue Coal Company; 2006-01-23 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_mine:** Metinvest B V → No 3; 2009-04-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Metinvest B V → Banner Blue Coal Company; 2009-04-30 to current/open; source msha-controller-operator-history