# Relationship history for MSHA mine 1508462

Current hierarchy: **Genet Herman W & John A Stovall → Black Energy Mining Company → Greenville No 1 Strip Mine**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Black Energy Mining Company → Greenville No 1 Strip Mine; 1975-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Genet Herman W & John A Stovall → Greenville No 1 Strip Mine; 1975-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Genet Herman W & John A Stovall → Black Energy Mining Company; 1975-06-01 to current/open; source msha-controller-operator-history