# Relationship history for MSHA mine 4406854

Current hierarchy: **Steve  Findley → Fleetwood Energy Inc → Mine #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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Jessica B  Ison  et al → Mine #3; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Steve  Findley et al → Mine #3; 1993-07-14 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ambrose Branch Coal Company Inc → Mine #3; 1996-10-01 to 1996-11-04; source msha-controller-operator-history
- **controller_controls_operator:** Jessica B  Ison  et al → Ambrose Branch Coal Company Inc; 1996-10-01 to 1996-11-04; source msha-controller-operator-history
- **controller_controls_operator:** Paul R  Ison  et al → Ambrose Branch Coal Company Inc; 1996-10-01 to 1996-11-04; source msha-controller-operator-history
- **operator_operates_mine:** Fleetwood Energy Inc → Mine #3; 1996-11-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steve  Findley et al → Fleetwood Energy Inc; 1996-11-05 to current/open; source msha-controller-operator-history