# Relationship history for MSHA mine 4406193

Current hierarchy: **Massey Energy Company → North Fork Mining Corp → Mine No 1**

- 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:** Hansel D  Fleming → Mine No 1; 1981-08-25 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kelly Energy Company Inc → Mine No 1; 1985-03-01 to 1990-05-20; source msha-controller-operator-history
- **controller_controls_operator:** Hansel D  Fleming → Kelly Energy Company Inc; 1985-03-01 to 1990-05-20; source msha-controller-operator-history
- **operator_operates_mine:** North Fork Mining Corp → Mine No 1; 1990-05-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cumberland Resources Corporation → Mine No 1; 1990-05-21 to 2010-04-18; source msha-controller-operator-history
- **controller_controls_operator:** Cumberland Resources Corporation → North Fork Mining Corp; 1990-05-21 to 2010-04-18; source msha-controller-operator-history
- **controller_controls_mine:** Massey Energy Company → Mine No 1; 2010-04-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Massey Energy Company → North Fork Mining Corp; 2010-04-19 to current/open; source msha-controller-operator-history