# Relationship history for MSHA mine 4406439

Current hierarchy: **Metinvest B V → Hokie Mining Company → No 1 Strip**

- 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:** Mullins Janet → No 1 Strip; 1987-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Jan-Arenda → No 1 Strip; 1988-01-01 to 1988-08-23; source msha-controller-operator-history
- **controller_controls_operator:** Mullins Janet → Jan-Arenda; 1988-01-01 to 1988-08-23; source msha-controller-operator-history
- **operator_operates_mine:** Hokie Mining Company → No 1 Strip; 1988-08-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth L  Stacy → No 1 Strip; 1988-08-24 to 2006-03-22; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth L  Stacy → Hokie Mining Company; 1988-08-24 to 2006-03-22; source msha-controller-operator-history
- **controller_controls_mine:** United  Company → No 1 Strip; 2006-03-23 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_operator:** United  Company → Hokie Mining Company; 2006-03-23 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_mine:** Metinvest B V → No 1 Strip; 2009-04-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Metinvest B V → Hokie Mining Company; 2009-04-30 to current/open; source msha-controller-operator-history