# Relationship history for MSHA mine 3607742

Current hierarchy: **Matt L.  Shingara Jr. → Shingara Coal → 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:** Rebuck Coal → No 1 Slope; 1985-09-01 to 1988-05-19; source msha-controller-operator-history
- **controller_controls_mine:** Rebuck Garry → No 1 Slope; 1985-09-01 to 1988-05-19; source msha-controller-operator-history
- **controller_controls_operator:** Rebuck Garry → Rebuck Coal; 1985-09-01 to 1988-05-19; source msha-controller-operator-history
- **controller_controls_mine:** Matt L.  Shingara Jr. → No 1 Slope; 1987-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Shingara Coal → No 1 Slope; 1988-05-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Matt L.  Shingara Jr. → Shingara Coal; 1988-05-20 to current/open; source msha-controller-operator-history