# Relationship history for MSHA mine 3606704

Current hierarchy: **Fanell Carol A & Daniel G Visnic → Pennsylvania Power & Energy Company → Zizan Strip #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:** Fanell Thomas J Et Al → Zizan Strip #1; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Laurel Coal Company Inc → Zizan Strip #1; 1978-07-01 to 1983-10-17; source msha-controller-operator-history
- **controller_controls_operator:** Fanell Thomas J Et Al → Laurel Coal Company Inc; 1978-07-01 to 1983-10-17; source msha-controller-operator-history
- **operator_operates_mine:** Pennsylvania Power & Energy Company → Zizan Strip #1; 1983-10-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Fanell Carol A & Daniel G Visnic → Zizan Strip #1; 1983-10-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fanell Carol A & Daniel G Visnic → Pennsylvania Power & Energy Company; 1983-10-18 to current/open; source msha-controller-operator-history