# Relationship history for MSHA mine 3606772

Current hierarchy: **Weidner Terry L--William & Peter C Rebuck → R & W Coal Company → No 1 Slope**

- 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:** Last Try Coal Company → No 1 Slope; 1979-01-01 to 1984-07-29; source msha-controller-operator-history
- **controller_controls_mine:** Wolfgang Lester & Thomas Martin → No 1 Slope; 1979-01-01 to 1984-07-29; source msha-controller-operator-history
- **controller_controls_operator:** Wolfgang Lester & Thomas Martin → Last Try Coal Company; 1979-01-01 to 1984-07-29; source msha-controller-operator-history
- **operator_operates_mine:** Last Try Coal Company → No 1 Slope; 1984-07-30 to 1984-09-16; source msha-controller-operator-history
- **controller_controls_mine:** Latshaw Leroy → No 1 Slope; 1984-07-30 to 1984-09-16; source msha-controller-operator-history
- **controller_controls_operator:** Latshaw Leroy → Last Try Coal Company; 1984-07-30 to 1984-09-16; source msha-controller-operator-history
- **operator_operates_mine:** R & W Coal Company → No 1 Slope; 1984-09-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Weidner Terry L--William & Peter C Rebuck → No 1 Slope; 1984-09-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Weidner Terry L--William & Peter C Rebuck → R & W Coal Company; 1984-09-17 to current/open; source msha-controller-operator-history