# Relationship history for MSHA mine 2501083

Current hierarchy: **Tony R  Emme → Emme Sand & Gravel → Emme Sand & Gravel**

- 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:** Larry'S Sand & Gravel → Emme Sand & Gravel; 1987-06-01 to 1996-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Larry  Fluckey → Emme Sand & Gravel; 1987-06-01 to 1996-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Larry  Fluckey → Larry'S Sand & Gravel; 1987-06-01 to 1996-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Emme Sand & Gravel → Emme Sand & Gravel; 1997-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tony R  Emme → Emme Sand & Gravel; 1997-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tony R  Emme → Emme Sand & Gravel; 1997-01-01 to current/open; source msha-controller-operator-history