# Relationship history for MSHA mine 3607059

Current hierarchy: **Shingara Robert R → Chestnut Coal → No 10 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

- **controller_controls_mine:** Shingara Robert R → No 10 Slope; 1979-02-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Chestnut Coal → No 10 Slope; 1980-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Shingara Robert R → Chestnut Coal; 1980-11-01 to current/open; source msha-controller-operator-history