# Relationship history for MSHA mine 2800501

Current hierarchy: **Janet R  Braen → Saddle Mountain LP → VAN ORDEN SAND AND 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:** Van Orden Sand & Gravel → VAN ORDEN SAND AND GRAVEL; 1950-01-01 to 1990-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Elbert  Van Orden → VAN ORDEN SAND AND GRAVEL; 1950-01-01 to 1990-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Elbert  Van Orden → Van Orden Sand & Gravel; 1950-01-01 to 1990-08-31; source msha-controller-operator-history
- **operator_operates_mine:** Saddle Mountain LP → VAN ORDEN SAND AND GRAVEL; 1990-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Janet R  Braen  et al → VAN ORDEN SAND AND GRAVEL; 1990-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Janet R  Braen  et al → Saddle Mountain LP; 1990-09-01 to current/open; source msha-controller-operator-history