# Relationship history for MSHA mine 3606773

Current hierarchy: **Tucci Leonard Jr → L & A Coal Company Inc → Scott Haven**

- 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

- **operator_operates_mine:** L & A Coal Company Inc → Scott Haven; 1978-12-01 to 1981-03-22; source msha-controller-operator-history
- **controller_controls_mine:** Battistella J L → Scott Haven; 1978-12-01 to 1981-03-22; source msha-controller-operator-history
- **controller_controls_operator:** Battistella J L → L & A Coal Company Inc; 1978-12-01 to 1981-03-22; source msha-controller-operator-history
- **operator_operates_mine:** L & A Coal Company Inc → Scott Haven; 1981-03-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tucci Leonard Jr → Scott Haven; 1981-03-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tucci Leonard Jr → L & A Coal Company Inc; 1981-03-23 to current/open; source msha-controller-operator-history